-
1
-
-
0024564576
-
-
1. Hensens, O. D.; Giner, J.-L.; Goldberg, I. H. J. Am. Chem. Soc. 1989, 111, 3295.
-
(1989)
J. Am. Chem. Soc.
, vol.111
, pp. 3295
-
-
Hensens, O.D.1
Giner, J.-L.2
Goldberg, I.H.3
-
2
-
-
0001582792
-
-
This work is remarkable not only for the transformation depicted, but also for the fact that, to the best of our knowledge, it describes the earliest example of a biradical-forming electrocyclization reaction
-
2. Mayer, J.; Sondheimer, F. J. Am. Chem. Soc. 1966, 88, 602, 603. This work is remarkable not only for the transformation depicted, but also for the fact that, to the best of our knowledge, it describes the earliest example of a biradical-forming electrocyclization reaction.
-
(1966)
J. Am. Chem. Soc.
, vol.88
, pp. 602
-
-
Mayer, J.1
Sondheimer, F.2
-
3
-
-
33947336894
-
-
3. (a) Corey, E. J.; Katzenellenbogen, J. A.; Posner, G. H. J. Am. Chem. Soc. 1967, 89, 4245.
-
(1967)
J. Am. Chem. Soc.
, vol.89
, pp. 4245
-
-
Corey, E.J.1
Katzenellenbogen, J.A.2
Posner, G.H.3
-
4
-
-
0000705649
-
-
(b) Corey, B. J.; Kirst, H. A.; Katzenellenbogen, J. A. J. Am. Chem. Soc. 1970, 92, 6314.
-
(1970)
J. Am. Chem. Soc.
, vol.92
, pp. 6314
-
-
Corey, B.J.1
Kirst, H.A.2
Katzenellenbogen, J.A.3
-
5
-
-
0028234484
-
-
4. Horita, K.; Sakurai, Y.; Hachiya, S-i.; Nagasawa, M.; Yonemitsu, O. Chem. Pharm. Bull. 1994, 42, 683.
-
(1994)
Chem. Pharm. Bull.
, vol.42
, pp. 683
-
-
Horita, K.1
Sakurai, Y.2
Hachiya, S.-I.3
Nagasawa, M.4
Yonemitsu, O.5
-
7
-
-
0010329829
-
-
note
-
6. It was crucial to the success of these transformations that the temperature of the Swern oxidation be maintained at -78 °C and that methanol be added to the dibromoolefination reaction in order to consume triphenylphosphine dibromide generated in situ. On scales <10 g, the bis-dibromoolefinated product was isolated in 65-79% yield; using 32 g of diol 3 the yield was 38%.
-
-
-
-
8
-
-
0010330639
-
-
note
-
7. All new compounds afforded satisfactory spectroscopic and analytical data.
-
-
-
-
11
-
-
0010373872
-
-
(b) Santiago, C.; Houk, K. N.; DeCicco, G. J.; Scott, L. T. J. Am. Chem. Soc. 1978, 100, 692.
-
(1978)
J. Am. Chem. Soc.
, vol.100
, pp. 692
-
-
Santiago, C.1
Houk, K.N.2
DeCicco, G.J.3
Scott, L.T.4
-
12
-
-
0010375907
-
-
note
-
10. The structure shown is actually the enantiomer of 6, which was synthesized by an identical procedure, albeit starting with D-dimethyl tartrate.
-
-
-
-
13
-
-
0010376721
-
-
note
-
11. By-products arising from over-desilylation were recovered and transformed to 6 by treatment with TIPSOTf and 2.6-lutidine in dichloromethane at 23 °C (mass recovery ∼ 96%).
-
-
-
-
14
-
-
0017166973
-
-
12. (a) Chan, K.; Cohen, N.; De Noble, J. P.; Specian, A. C., Jr.; Saucy, G. J. Org. Chem. 1976, 41, 3497.
-
(1976)
J. Org. Chem.
, vol.41
, pp. 3497
-
-
Chan, K.1
Cohen, N.2
De Noble, J.P.3
Specian A.C., Jr.4
Saucy, G.5
-
15
-
-
0010375611
-
-
note
-
13C NMR spectrum established that epoxidation of the olefin endocyclic to the 5-membered ring (rather than the 9-membered ring) had occurred.
-
-
-
-
17
-
-
0002497114
-
-
(b) Corey, E. J.; Katzenellenbogen, J. A.; Roman, S. A.; Gilman, N. W. Tetrahedron Lett. 1971, 1821.
-
(1971)
Tetrahedron Lett.
, pp. 1821
-
-
Corey, E.J.1
Katzenellenbogen, J.A.2
Roman, S.A.3
Gilman, N.W.4
-
19
-
-
0023894194
-
-
(d) Marshall, J. A.; Crooks, S. L.; DeHoff, B. S. J. Org. Chem. 1988, 53, 1616.
-
(1988)
J. Org. Chem.
, vol.53
, pp. 1616
-
-
Marshall, J.A.1
Crooks, S.L.2
DeHoff, B.S.3
-
20
-
-
0000157064
-
-
15. Casensky, B.; Machacek, J.; Abrham, K. Coll. Czech. Chem. Commun. 1971, 36, 2649.
-
(1971)
Coll. Czech. Chem. Commun.
, vol.36
, pp. 2649
-
-
Casensky, B.1
Machacek, J.2
Abrham, K.3
-
22
-
-
0010330365
-
-
note
-
17. The small amount of residual olefin 9 is believed to result from the quenching of a vinyl aluminate intermediate by hexamethyldisilazane.
-
-
-
|