-
2
-
-
0004098344
-
-
May 6; nitric oxide was twice voted "Molecule of the Year" by the American Association for the Advancement of Science" (1992 and 1993)
-
The Chemical and Engineering News, May 6, 1996, p. 38; nitric oxide was twice voted "Molecule of the Year" by the American Association for the Advancement of Science" (1992 and 1993) .
-
(1996)
The Chemical and Engineering News
, pp. 38
-
-
-
3
-
-
0000736856
-
-
our own unsuccessful efforts in this area date to the early 1970s. It should be noted that impressive efforts towards the generation of diatomic sulfur were carried out in a Ph.D. thesis in 1976 by D. L. Smith (University of Arizona, Professor Richard Glass, supervisor), University Microfilms, Ann Arbor, MI, 77-11,451
-
Steliou, K.; Gareau, Y.; Harpp, D. N. J. Am. Chem. Soc. 1984, 106, 799; our own unsuccessful efforts in this area date to the early 1970s. It should be noted that impressive efforts towards the generation of diatomic sulfur were carried out in a Ph.D. thesis in 1976 by D. L. Smith (University of Arizona, Professor Richard Glass, supervisor), University Microfilms, Ann Arbor, MI, 77-11,451.
-
(1984)
J. Am. Chem. Soc.
, vol.106
, pp. 799
-
-
Steliou, K.1
Gareau, Y.2
Harpp, D.N.3
-
4
-
-
0343298041
-
-
unpublished results
-
a) Our initial, unsuccessful efforts in this area date to the early 1970s with organic bicyclic disulfides, Harpp, D. N.; Snyder, J. P; Montecalvo, D. unpublished results;
-
-
-
Harpp, D.N.1
Snyder, J.P.2
Montecalvo, D.3
-
9
-
-
0001675480
-
-
a) Tardif, S. L.; Williams, C. R.; Harpp, D. N. J. Am. Chem. Soc. 1995, 117, 9067. It should be mentioned that in virtually all reactions where diatomic sulfur is transferred, moderate amounts of polysulfide (almost always tetrasulfides 3) are formed. These polysulfides are treated with triphenylphosphine and converted back to the disulfide adduct in nearly 100% isolated yield. Under the conditions of this reaction, (toluene, 100-105 °C) when dienes are heated with elemental sulfur, neither di-nor tetrasulfide adducts are detected. This demonstrates that the trapped products are not likely the result of a transfer of sulfur fragments by "activated sulfur". For further comments on this as well as background on diatomic sulfur transfer see b-d:
-
(1995)
J. Am. Chem. Soc.
, vol.117
, pp. 9067
-
-
Tardif, S.L.1
Williams, C.R.2
Harpp, D.N.3
-
11
-
-
84963177623
-
-
c) Steliou, K.; Gareau, Y.; Milot, G.; Salama, P. Phosphorus, Sulfur and Silicon 1989, 43, 209;
-
(1989)
Phosphorus, Sulfur and Silicon
, vol.43
, pp. 209
-
-
Steliou, K.1
Gareau, Y.2
Milot, G.3
Salama, P.4
-
12
-
-
0000175158
-
-
d) another paper by Steliou addresses the issue of diatomic sulfur as a free species; see Steliou, K.; Salama, P.; Yu, X. J. Am. Chem. Soc. 1992, 114, 1456;
-
(1992)
J. Am. Chem. Soc.
, vol.114
, pp. 1456
-
-
Steliou, K.1
Salama, P.2
Yu, X.3
-
13
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84951547554
-
-
e) Freeman, F.; Kim, D. S. H. L.; Rodriguez, E. Sulfur Reports 1989, 9, 207.
-
(1989)
Sulfur Reports
, vol.9
, pp. 207
-
-
Freeman, F.1
Kim, D.S.H.L.2
Rodriguez, E.3
-
15
-
-
0343733706
-
-
note
-
b) this result corrects an earlier impression on this behavior (ref. 7a).
-
-
-
-
16
-
-
0342863110
-
-
note
-
Unreacted diene, elemental sulfur, the corresponding alcohol and aldehyde are the other products detected and isolated.
-
-
-
-
18
-
-
0000652606
-
-
a) Thompson, Q. E.; Crutchfield, M. M.; Dietrich, M. W.; Pierron, E. J. Org. Chem. 1965, 30, 2692;
-
(1965)
J. Org. Chem.
, vol.30
, pp. 2692
-
-
Thompson, Q.E.1
Crutchfield, M.M.2
Dietrich, M.W.3
Pierron, E.4
-
19
-
-
0000710587
-
-
b) Of note is the recent work of Steudel on the simplest alkoxydisulfide (dimethoxydisulfide/dimethoxydisulfane); the gas-phase structure was determined by electron diffraction; see Steudel, R.; Schmidt, H.; Baumeister, E.; Overhammer, H; Koritsanszky, T. J. Phys. Chem. 1995, 99, 8987;
-
(1995)
J. Phys. Chem.
, vol.99
, pp. 8987
-
-
Steudel, R.1
Schmidt, H.2
Baumeister, E.3
Overhammer, H.4
Koritsanszky, T.5
-
20
-
-
0012501146
-
-
c) the crystal structure has also been determined at 110 K; Koritsanszk, T.; Buschmann, J.; Luger, P.; Schmidt, H.; Steudel, R.J. Phys. Chem. 1994, 96, 9243;
-
(1994)
J. Phys. Chem.
, vol.96
, pp. 9243
-
-
Koritsanszk, T.1
Buschmann, J.2
Luger, P.3
Schmidt, H.4
Steudel, R.5
-
21
-
-
0011790424
-
-
d) some of the nucleophilic substitution chemistry has been reported; Kagami, J.; Motoki, S. J. Org. Chem. 1977, 42, 4139;
-
(1977)
J. Org. Chem.
, vol.42
, pp. 4139
-
-
Kagami, J.1
Motoki, S.2
-
22
-
-
0000658069
-
-
e) a recent paper outlined the behavior of alkoxydisulfides under the influence of light in reactions with fullerenes; Borghi, R.; Lunazzi, L.; Placuccu, G.; Cerioni, G.; Plumitallo, A. J. Org. Chem. 1996, 61, 3327;
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(1996)
J. Org. Chem.
, vol.61
, pp. 3327
-
-
Borghi, R.1
Lunazzi, L.2
Placuccu, G.3
Cerioni, G.4
Plumitallo, A.5
-
24
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-
0000282528
-
-
Allinger, N. L.; Hickey, M. J.; Kao, J. J. Am. Chem. Soc. 1976, 98, 2741; Foss, O.; Adv. Inorg., Chem. Radiochem. 1960, 2, 237. For a relatively long S-S bond of 2.08 Å, see Nicolaou, K. C.; DeFrees, S. A.; Hwang, C.-K.; Stylianides, N.; Carroll, P. J.; Snyder, J. P. J. Am. Chem. Soc. 1990, 112, 3029 (1990). The compound in question is the only example of a stable, 1,2-dithietane ring system.
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(1976)
J. Am. Chem. Soc.
, vol.98
, pp. 2741
-
-
Allinger, N.L.1
Hickey, M.J.2
Kao, J.3
-
25
-
-
58149503355
-
-
Allinger, N. L.; Hickey, M. J.; Kao, J. J. Am. Chem. Soc. 1976, 98, 2741; Foss, O.; Adv. Inorg., Chem. Radiochem. 1960, 2, 237. For a relatively long S-S bond of 2.08 Å, see Nicolaou, K. C.; DeFrees, S. A.; Hwang, C.-K.; Stylianides, N.; Carroll, P. J.; Snyder, J. P. J. Am. Chem. Soc. 1990, 112, 3029 (1990). The compound in question is the only example of a stable, 1,2-dithietane ring system.
-
(1960)
Adv. Inorg., Chem. Radiochem.
, vol.2
, pp. 237
-
-
Foss, O.1
-
26
-
-
0025120972
-
-
1990
-
Allinger, N. L.; Hickey, M. J.; Kao, J. J. Am. Chem. Soc. 1976, 98, 2741; Foss, O.; Adv. Inorg., Chem. Radiochem. 1960, 2, 237. For a relatively long S-S bond of 2.08 Å, see Nicolaou, K. C.; DeFrees, S. A.; Hwang, C.-K.; Stylianides, N.; Carroll, P. J.; Snyder, J. P. J. Am. Chem. Soc. 1990, 112, 3029 (1990). The compound in question is the only example of a stable, 1,2-dithietane ring system.
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(1990)
J. Am. Chem. Soc.
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, pp. 3029
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Nicolaou, K.C.1
DeFrees, S.A.2
Hwang, C.-K.3
Stylianides, N.4
Carroll, P.J.5
Snyder, J.P.6
-
29
-
-
0000259044
-
-
Typical S-S bond rotational barriers for aliphatic disulfides are in the range of 2-16 kcal/mol with the most typical values being ca. 9 kcal/mol; Fraser, R. R.; Boussard, G.; Saunders, J. K.; Lambert, J. B. J. Am. Chem. Soc. 1971, 93, 3822.
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Fraser, R.R.1
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Saunders, J.K.3
Lambert, J.B.4
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31
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Abu-Yousef, I. A.; Harpp, D. N. Tetrahedron Lett. 1993, 34, 4289; ibid. 1994, 35, 7167.
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Tetrahedron Lett.
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Abu-Yousef, I. A.; Harpp, D. N. Tetrahedron Lett. 1993, 34, 4289; ibid. 1994, 35, 7167.
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(1994)
Tetrahedron Lett.
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, pp. 7167
-
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34
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0343297551
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St. John's, Newfoundland, Canada, June
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Rys, A; Shaver, A. G.; Harpp, D. N. 79th Canadian Chemical Conference, St. John's, Newfoundland, Canada, June, 1996; Rys, A; Harpp, D. N. manuscript submitted. When DMSO is used in such reactions, a small amount of it disproportionates into dimethylsulfone and dimethylsulfide; see Traynelis, V. J.; Hergenrother, W. L. J. Org. Chem. 1963, 29, 21; Head, D. L.; McCarty, C. G. Tetrahedron Lett. 1973, 1405.
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(1996)
79th Canadian Chemical Conference
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Rys, A.1
Shaver, A.G.2
Harpp, D.N.3
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35
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0342862619
-
-
manuscript submitted
-
Rys, A; Shaver, A. G.; Harpp, D. N. 79th Canadian Chemical Conference, St. John's, Newfoundland, Canada, June, 1996; Rys, A; Harpp, D. N. manuscript submitted. When DMSO is used in such reactions, a small amount of it disproportionates into dimethylsulfone and dimethylsulfide; see Traynelis, V. J.; Hergenrother, W. L. J. Org. Chem. 1963, 29, 21; Head, D. L.; McCarty, C. G. Tetrahedron Lett. 1973, 1405.
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Rys, A.1
Harpp, D.N.2
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36
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0343297550
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-
Rys, A; Shaver, A. G.; Harpp, D. N. 79th Canadian Chemical Conference, St. John's, Newfoundland, Canada, June, 1996; Rys, A; Harpp, D. N. manuscript submitted. When DMSO is used in such reactions, a small amount of it disproportionates into dimethylsulfone and dimethylsulfide; see Traynelis, V. J.; Hergenrother, W. L. J. Org. Chem. 1963, 29, 21; Head, D. L.; McCarty, C. G. Tetrahedron Lett. 1973, 1405.
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(1963)
J. Org. Chem.
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Traynelis, V.J.1
Hergenrother, W.L.2
-
37
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0010663862
-
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Rys, A; Shaver, A. G.; Harpp, D. N. 79th Canadian Chemical Conference, St. John's, Newfoundland, Canada, June, 1996; Rys, A; Harpp, D. N. manuscript submitted. When DMSO is used in such reactions, a small amount of it disproportionates into dimethylsulfone and dimethylsulfide; see Traynelis, V. J.; Hergenrother, W. L. J. Org. Chem. 1963, 29, 21; Head, D. L.; McCarty, C. G. Tetrahedron Lett. 1973, 1405.
-
(1973)
Tetrahedron Lett.
, pp. 1405
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Head, D.L.1
McCarty, C.G.2
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38
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0009409420
-
-
and references cited therein
-
a) In many of the sulfur-incorporation reactions in the literature, sulfur is "activated" by the addition of a base or ammonia; for comments on the vulcanization of rubber see Oae, S. Main Group Chemistry News 1996, 4, 10 and references cited therein; also see Chiacchio, U.; Corsaro, A.; Rescifina, A.; Testa, M. G.; Purrello, G. Heterocycles 1993, 36, 223;
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(1996)
Main Group Chemistry News
, vol.4
, pp. 10
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Oae, S.1
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39
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0009409420
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a) In many of the sulfur-incorporation reactions in the literature, sulfur is "activated" by the addition of a base or ammonia; for comments on the vulcanization of rubber see Oae, S. Main Group Chemistry News 1996, 4, 10 and references cited therein; also see Chiacchio, U.; Corsaro, A.; Rescifina, A.; Testa, M. G.; Purrello, G. Heterocycles 1993, 36, 223;
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Heterocycles
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, pp. 223
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Chiacchio, U.1
Corsaro, A.2
Rescifina, A.3
Testa, M.G.4
Purrello, G.5
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40
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0027405334
-
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8 in DMF (with amine activation) with diene 10b to the corresponding cyclic disulfide. No mention was made of the possible mechanism; Fulcher, B. C.; Hinter, M. L.; Welker, M. L. Synth. Commun. 1993, 23, 217.
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(1993)
Synth. Commun.
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Fulcher, B.C.1
Hinter, M.L.2
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Salahub, D. R.; Foti, A. E.; Smith Jr., V. H. J. Am. Chem. Soc. 1978, 100, 7847.
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Harpp, D. N.; Steliou, K.; Cheer, C. J. J. Chem. Soc., Chem Commun. 1980, 825.
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Harpp, D.N.1
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Thompson, Q. E.; Crutchfield, M. M.; Dietrich, M. W. J. Org. Chem. 1965, 30, 2696.
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a)Bickelhaupt, F. M.; Solà, M.; von Ragué Schleyer, P. J. Computational Chem. 1995, 16, 465;
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Von Ragué Schleyer, P.3
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0001729291
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c) Laitinen, R. S.,; Pakkannen, T. A.; Steudel, R. J. Am. Chem. Soc. 1987, 109, 710;
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Laitinen, R.S.1
Pakkannen, T.A.2
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0343733208
-
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Elsevier Press, Amsterdam, Zwanenburg, B.; Klunder, J. J. H., Ed.
-
d) In addition, MINDO/3 calculations carried out in our laboratory using the atoms Cl, O and H, clearly indicate the same trend, see D. N. Harpp in Perspectives in The Organic Chemistry of Sulfur, Elsevier Press, Amsterdam, Zwanenburg, B.; Klunder, J. J. H., Ed., 1986, p. 1 ; further, calculations at the MP2/6-31+G* level show the same trend, Snyder, J. P.; Harpp, D. N. unpublished results;
-
(1986)
Perspectives in the Organic Chemistry of Sulfur
, pp. 1
-
-
Harpp, D.N.1
-
50
-
-
0343733209
-
-
unpublished results
-
d) In addition, MINDO/3 calculations carried out in our laboratory using the atoms Cl, O and H, clearly indicate the same trend, see D. N. Harpp in Perspectives in The Organic Chemistry of Sulfur, Elsevier Press, Amsterdam, Zwanenburg, B.; Klunder, J. J. H., Ed., 1986, p. 1 ; further, calculations at the MP2/6-31+G* level show the same trend, Snyder, J. P.; Harpp, D. N. unpublished results;
-
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Snyder, J.P.1
Harpp, D.N.2
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51
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33845553498
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e) For a review on branch-bonding in sulfur compounds, see Kutney, G. W.; Turnbull, K. Chem. Rev. 1982, 82, 333.
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Kutney, G.W.1
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33748529668
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Another addition to precursors of diatomic sulfur has recently appeared: English, R. F.; Rakitin, O. A.; Rees, C. W.; Vlasova, O. G. J. Chem. Soc. Perkin Trans, 1, 1997, 201.
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0342428017
-
-
2S on prolonged heating from cyclic disulfides like 2b to give thiophenes;
-
2S on prolonged heating from cyclic disulfides like 2b to give thiophenes; Rys, A.; Harpp, D. N. unpublished results.
-
-
-
Harpp, D.N.1
MacDonald, J.G.2
-
56
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0342428015
-
-
unpublished results
-
2S on prolonged heating from cyclic disulfides like 2b to give thiophenes; Rys, A.; Harpp, D. N. unpublished results.
-
-
-
Rys, A.1
Harpp, D.N.2
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58
-
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0342862614
-
-
note
-
Sulfur monoxide can be generated by the reduction of sulfur dioxide with sulfur vapor; like oxygen, it has a triplet ground state; see ref. 1.
-
-
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59
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0008056099
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The photoelectron spectrum of S=O has been reported, see Dyke, J. M.; Morris, A.; Trickle, I. R.J. Chem. Soc. Faraday Trans. 1974, 70, 1818.
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Dyke, J.M.1
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Hartzell, G. E.; Paige, J. N. J. Am. Chem. Soc. 1966, 88, 2616; Hartzell, G. E.; Paige, J. N. J. Org. Chem. 1967, 32, 459; sulfur monoxide is corrosive, causing burns.
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Hartzell, G.E.1
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Hartzell, G. E.; Paige, J. N. J. Am. Chem. Soc. 1966, 88, 2616; Hartzell, G. E.; Paige, J. N. J. Org. Chem. 1967, 32, 459; sulfur monoxide is corrosive, causing burns.
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64
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for further mechanistic comments on this decompisition
-
a) Glass, R. S.; Jung, W. Sulfur Letters 1994, 17, 183; for further mechanistic comments on this decompisition
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Glass, R.S.1
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