-
5
-
-
0034867881
-
-
For reviews on phosphine-catalyzed reactions, see: a
-
For reviews on phosphine-catalyzed reactions, see: (a) Lu, X.; Zhang, C.; Xu, Z. Acc. Chem. Res. 2001, 34, 535.
-
(2001)
Acc. Chem. Res
, vol.34
, pp. 535
-
-
Lu, X.1
Zhang, C.2
Xu, Z.3
-
7
-
-
29244447356
-
-
(c) Lu, X.; Du, Y.; Lu, C. Pure Appl. Chem. 2005, 77, 1985.
-
(1985)
Pure Appl. Chem
, vol.2005
, pp. 77
-
-
Lu, X.1
Du, Y.2
Lu, C.3
-
8
-
-
44349161123
-
-
(d) Ye, L.-W.; Zhou, J.; Tang, Y. Chem. Soc. Rev. 2008,37, 1140.
-
(2008)
Chem. Soc. Rev
, vol.37
, pp. 1140
-
-
Ye, L.-W.1
Zhou, J.2
Tang, Y.3
-
9
-
-
21244479265
-
-
Further elegant developments and extensions of the chemistry based on phosphine organocatalysis have been reported by many other groups. For selected recent examples, see: (a) Kamijo, S, Kanazawa, C, Yamamoto, Y. J. Am. Chem. Soc. 2005, 127, 9260
-
Further elegant developments and extensions of the chemistry based on phosphine organocatalysis have been reported by many other groups. For selected recent examples, see: (a) Kamijo, S.; Kanazawa, C.; Yamamoto, Y. J. Am. Chem. Soc. 2005, 127, 9260.
-
-
-
-
10
-
-
17444432653
-
-
(b) Zhu, X.-F.; Henry, C. E.; Wang, J.; Dudding, T.; Kwon, O. Org. Lett. 2005, 7, 1387.
-
(2005)
Org. Lett
, vol.7
, pp. 1387
-
-
Zhu, X.-F.1
Henry, C.E.2
Wang, J.3
Dudding, T.4
Kwon, O.5
-
11
-
-
19544392711
-
-
(c) Du, Y.; Feng, J.; Lu, X. Org. Lett. 2005, 7, 1987.
-
(1987)
Org. Lett
, vol.2005
, pp. 7
-
-
Du, Y.1
Feng, J.2
Lu, X.3
-
12
-
-
22244458282
-
-
(d) Zhu, X.-F.; Schaffner, A.-P.; Li, R. C.; Kwon, O. Org. Lett. 2005, 7, 2977.
-
(2005)
Org. Lett
, vol.7
, pp. 2977
-
-
Zhu, X.-F.1
Schaffner, A.-P.2
Li, R.C.3
Kwon, O.4
-
14
-
-
23044432139
-
-
(f) Pham, T. Q.; Pyne, S. G.; Skelton, B. W.; White, A. H. J. Org. Chem. 2005, 70, 6369.
-
(2005)
J. Org. Chem
, vol.70
, pp. 6369
-
-
Pham, T.Q.1
Pyne, S.G.2
Skelton, B.W.3
White, A.H.4
-
16
-
-
33745725835
-
-
(h) Nair, V.; Biju, A. T.; Mohanan, K.; Suresh, E. Org. Lett. 2006, 8, 2213.
-
(2006)
Org. Lett
, vol.8
, pp. 2213
-
-
Nair, V.1
Biju, A.T.2
Mohanan, K.3
Suresh, E.4
-
17
-
-
33748632920
-
-
(i) Dudding, T.; Kwon, O.; Mercier, E. Org. Lett. 2006, 8, 3643.
-
(2006)
Org. Lett
, vol.8
, pp. 3643
-
-
Dudding, T.1
Kwon, O.2
Mercier, E.3
-
18
-
-
34248575467
-
-
(j) Castellano, S.; Fiji, H. D. G.; Kinderman, S. S.; Watanabe, M.; de Leon, P.; Tamanoi, F.; Kwon, O. J. Am. Chem. Soc. 2007, 129, 5843.
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 5843
-
-
Castellano, S.1
Fiji, H.D.G.2
Kinderman, S.S.3
Watanabe, M.4
de Leon, P.5
Tamanoi, F.6
Kwon, O.7
-
19
-
-
34249804781
-
-
(k) Zhu, X.-F.; Henry, C. E.; Kwon, O. J. Am. Chem. Soc. 2007,129, 6722.
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 6722
-
-
Zhu, X.-F.1
Henry, C.E.2
Kwon, O.3
-
21
-
-
34547781801
-
-
(m) Ye, L.-W.; Sun, X.-L.; Wang, Q.-G.; Tang, Y. Angew. Chem. Int. Ed. 2007, 46, 5951.
-
(2007)
Angew. Chem. Int. Ed
, vol.46
, pp. 5951
-
-
Ye, L.-W.1
Sun, X.-L.2
Wang, Q.-G.3
Tang, Y.4
-
23
-
-
33846917246
-
-
(o) Wallace, D. J.; Sidda, R. L.; Reamer, R. A. J. Org. Chem. 2007, 72, 1051.
-
(2007)
J. Org. Chem
, vol.72
, pp. 1051
-
-
Wallace, D.J.1
Sidda, R.L.2
Reamer, R.A.3
-
25
-
-
51749125933
-
-
(q) Creech, G. S.; Zhu, X.-F.; Fonovic, B.; Dudding, T.; Kwon, O. Tetrahedron 2008, 64, 6935.
-
(2008)
Tetrahedron
, vol.64
, pp. 6935
-
-
Creech, G.S.1
Zhu, X.-F.2
Fonovic, B.3
Dudding, T.4
Kwon, O.5
-
27
-
-
33947614581
-
-
(a) Xia, Y.; Liang, Y.; Chen, Y.; Wang, M.; Jiao, L.; Huang, F.; Liu, S.; Li, Y.; Yu, Z.-X. J. Am. Chem. Soc. 2007,129, 3470.
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 3470
-
-
Xia, Y.1
Liang, Y.2
Chen, Y.3
Wang, M.4
Jiao, L.5
Huang, F.6
Liu, S.7
Li, Y.8
Yu, Z.-X.9
-
28
-
-
53549109697
-
-
(b) Liang, Y.; Liu, S.; Xia, Y.; Li, Y.; Yu, Z.-X. Chem. Eur. J. 2008, 14, 4361.
-
(2008)
Chem. Eur. J
, vol.14
, pp. 4361
-
-
Liang, Y.1
Liu, S.2
Xia, Y.3
Li, Y.4
Yu, Z.-X.5
-
29
-
-
64249126280
-
-
In the revision of this paper, we repeated reaction (c, Scheme 2) twice. It was found that 3-CH2D-substituted [3+2] product was generated with a ratio of 44% and 38, respectively. The 3-Me-substituted [3+2] product was formed through the catalysis of DOH (generated in the reaction) and H 2O generated and residual water in the reaction system, Therefore, it is reasonable for the observed deuterated ratio of about 40
-
2O (generated and residual water in the reaction system). Therefore, it is reasonable for the observed deuterated ratio of about 40%.
-
-
-
-
30
-
-
0000000529
-
-
Selected examples for 2-methylallenoate used as a twocarbon synthon, see: (a) Padwa, A.; Matzinger, M.; Tomioka, Y.; Venkatramanan, M. K. J. Org. Chem. 1988, 53, 955.
-
Selected examples for 2-methylallenoate used as a twocarbon synthon, see: (a) Padwa, A.; Matzinger, M.; Tomioka, Y.; Venkatramanan, M. K. J. Org. Chem. 1988, 53, 955.
-
-
-
-
31
-
-
0000024014
-
-
(b) Kumar, K.; Kapur, A.; Ishar, M. P. S. Org. Lett. 2000, 2, 787.
-
(2000)
Org. Lett
, vol.2
, pp. 787
-
-
Kumar, K.1
Kapur, A.2
Ishar, M.P.S.3
-
32
-
-
1942489144
-
-
(c) Ishar, M. P. S.; Kapur, A.; Raj, T.; Girdhar, N. K.; Kaur, A. Synthesis 2004, 775.
-
(2004)
Synthesis
, pp. 775
-
-
Ishar, M.P.S.1
Kapur, A.2
Raj, T.3
Girdhar, N.K.4
Kaur, A.5
-
33
-
-
23844492744
-
-
(d) Jung, M. E.; Nishimura, N.; Novack, A. R. 7 Am. Chem. Soc. 2005,127, 11206.
-
(2005)
7 Am Chem. Soc
, vol.127
, pp. 11206
-
-
Jung, M.E.1
Nishimura, N.2
Novack, A.R.3
-
34
-
-
26444543230
-
-
(e) Zhao, G.-L.; Shi, Y.-L.; Shi, M. Org. Lett. 2005, 7, 4527.
-
(2005)
Org. Lett
, vol.7
, pp. 4527
-
-
Zhao, G.-L.1
Shi, Y.-L.2
Shi, M.3
-
35
-
-
0037462076
-
-
Examples for 2-methylallenoate used as a four-carbon synthon, see: (a) Zhu, X.-F.; Lan, J.; Kwon, O. 7Am. Chem. Soc. 2003,125, 4716.
-
Examples for 2-methylallenoate used as a four-carbon synthon, see: (a) Zhu, X.-F.; Lan, J.; Kwon, O. 7Am. Chem. Soc. 2003,125, 4716.
-
-
-
-
36
-
-
24644437269
-
-
Wurz, R. P.; Fu, G. C. 7 Am. Chem. Soc. 2005, 127, 12234.
-
(b) Wurz, R. P.; Fu, G. C. 7 Am. Chem. Soc. 2005, 127, 12234.
-
-
-
-
38
-
-
64249092302
-
-
Frisch, M. J, Trucks, G. W, Schlegel, H. B, Scuseria, G. E, Robb, M. A, Cheeseman, J. R, Montgomery, J. A. Jr, Vreven, T, Kudin, K. N, Burant, J. C, Millam, J. M, Iyengar, S. S, Tomasi, J, Barone, V, Mennucci, B, Cossi, M, Scalmani, G, Rega, N, Petersson, G. A, Nakatsuji, H, Hada, M, Ehara, M, Toyota, K, Fukuda, R, Hasegawa, J, Ishida, M, Nakajima, T, Honda, Y, Kitao, O, Nakai, H, Klene, M, Li, X, Knox, J. E, Hratchian, H. P, Cross, J. B, Adamo, C, Jaramillo, J, Gomperts, R, Stratmann, R. E, Yazyev, O, Austin, A. J, Cammi, R, Pomelli, C, Ochterski, J. W, Ayala, P. Y, Morokuma, K, Voth, G. A, Salvador, P, Dannenberg, J. J, Zakrzewski, V. G, Dapprich, S, Daniels, A. D, Strain, M. C, Farkas, O, Malick, D. K, Rabuck, A. D, Raghavachari, K, Foresman, J. B, Ortiz, J. V, Cui, Q, Baboul, A. G, Clifford, S, Cioslowski, J, Stefanov, B. B, Liu, G, Liashenko, A, Piskorz, P, Komaromi, I, Martin, R. L, Fox, D. J, Keith, T, Al-Lah
-
Frisch, M. J.; Trucks, G. W.; Schlegel, H. B.; Scuseria, G. E.; Robb, M. A.; Cheeseman, J. R.; Montgomery, J. A. Jr.; Vreven, T.; Kudin, K. N.; Burant, J. C.; Millam, J. M.; Iyengar, S. S.; Tomasi, J.; Barone, V.; Mennucci, B.; Cossi, M.; Scalmani, G.; Rega, N.; Petersson, G. A.; Nakatsuji, H.; Hada, M.; Ehara, M.; Toyota, K.; Fukuda, R.; Hasegawa, J.; Ishida, M.; Nakajima, T.; Honda, Y.; Kitao, O.; Nakai, H.; Klene, M.; Li, X.; Knox, J. E.; Hratchian, H. P.; Cross, J. B.; Adamo, C.; Jaramillo, J.; Gomperts, R.; Stratmann, R. E.; Yazyev, O.; Austin, A. J.; Cammi, R.; Pomelli, C.; Ochterski, J. W.; Ayala, P. Y.; Morokuma, K.; Voth, G. A.; Salvador, P.; Dannenberg, J. J.; Zakrzewski, V. G.; Dapprich, S.; Daniels, A. D.; Strain, M. C.; Farkas, O.; Malick, D. K.; Rabuck, A. D.; Raghavachari, K.; Foresman, J. B.; Ortiz, J. V.; Cui, Q.; Baboul, A. G.; Clifford, S.; Cioslowski, J.; Stefanov, B. B.; Liu, G.; Liashenko, A.; Piskorz, P.; Komaromi, I.; Martin, R. L.; Fox, D. J.; Keith, T.; Al-Laham, M. A.; Peng, C. Y.; Nanayakkara, A.; Challacombe, M.; Gill, P. M. W.; Johnson, B.; Chen, W.; Wong, M. W.; Gonzalez, C; Pople, J. A. Gaussian 03 (Revision C.02); Gaussian Inc.: Wallingford CT, 2004.
-
-
-
-
40
-
-
0345491105
-
-
(b) Lee, C.; Yang, W.; Parr, R. G. Phys. Rev. B 1988,37, 785.
-
(1988)
Phys. Rev. B
, vol.37
, pp. 785
-
-
Lee, C.1
Yang, W.2
Parr, R.G.3
-
43
-
-
84962349001
-
-
(b) Cossi, M.; Rega, N.; Scalmani, G.; Barone, V. J. Comput. Chem. 2003, 24, 669.
-
(2003)
J. Comput. Chem
, vol.24
, pp. 669
-
-
Cossi, M.1
Rega, N.2
Scalmani, G.3
Barone, V.4
-
45
-
-
64249094604
-
-
Although the generation of zwitterion 13 is endergonic by 17.5 kcal mol-1 in terms of free energy in benzene, the computed enthalpy and the free energy for the whole [3+2] reaction in benzene is -39.6 and -25.8 kcal mol-1, respectively
-
-1, respectively.
-
-
-
-
46
-
-
0030887944
-
-
For discussions on entropy overestimation in solution, see: a
-
For discussions on entropy overestimation in solution, see: (a) Hermans, J.; Wang, L. J. Am. Chem. Soc. 1997, 119, 2707.
-
(1997)
J. Am. Chem. Soc
, vol.119
, pp. 2707
-
-
Hermans, J.1
Wang, L.2
-
48
-
-
0000997465
-
7 Phys
-
(c) Strajbl, M.; Sham, Y. Y.; Villa, J.; Chu, Z.-T.; Warshel, A. 7 Phys. Chem. B 2000, 104, 4578.
-
(2000)
Chem. B
, vol.104
, pp. 4578
-
-
Strajbl, M.1
Sham, Y.Y.2
Villa, J.3
Chu, Z.-T.4
Warshel, A.5
-
50
-
-
34848840660
-
-
(e) Chen, Y.; Ye, S.; Jiao, L.; Liang, Y.; Sinha-Mahapatra, D. K.; Herndon, J. W.; Yu, Z.-X. J. Am. Chem. Soc. 2007, 129, 10773.
-
(2007)
J. Am. Chem. Soc
, vol.129
, pp. 10773
-
-
Chen, Y.1
Ye, S.2
Jiao, L.3
Liang, Y.4
Sinha-Mahapatra, D.K.5
Herndon, J.W.6
Yu, Z.-X.7
-
51
-
-
64249151061
-
-
General Procedure for the Ph3P- and H2O- Cocatalyzed [3+2] Reaction To a mixture of the fumarate (1 mmol, Ph 3P (0.5 mmol, and H2O (1 mmol) in toluene (5 mL) was added via syringe under nitrogen methyl 2-methylallenoate (0.5 mmol, After stirring at 90 °C for 12 h, the solvent was removed under reduced pressure, and the residue was purified by flash chromatography on Si02 to yield the product. trans-Trimethyl 3-Methylcyclopent-3-ene-l,2,4- tricarboxylate (3) Colorless oil; Rf= 0.27 (PE-EtOAc, 6:1, 1H NMR (300 MHz, CDC13, δ, 2.13 (m, 3 H, 2.90 (ddm, J, 16.5, 6.6 Hz, 1 H, 3.08 (ddm, J, 16.5, 9.6 Hz, 1 H, 3.50 (dt, J, 9.6, 6.6 Hz, 1 H, 3.72 (s, 3 H, 3.74 (s, 3 H, 3.77 (s, 3 H, 3.96 (dm, J, 6.6 Hz, 1 H, 13C NMR 75.5 MHz, CDC13, δ, 14.8, 36.0, 43.4, 51.3, 52.3, 52.4, 59.1, 128.2, 149.7, 165.3, 172.3, 174.0
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6: 308.1260; found: 308.1252.
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