Silicon-DirectedNazarov Reactions II. Preparation and Cyclization of ?-Silyl-substituted Divinyl Ketones
作者:Todd K. Jones、Scott E. Denmark
DOI:10.1002/hlca.19830660802
日期:1983.12.14
Two general methods for the preparation of β-silyl-substituted divinyl ketones have been developed starting from either α, β-unsaturated aldehydes or simple ketones. Anhydrous FeCl3 induces the cyclization to cyclopentenones under mild conditions and in good yields with predictable and complete control over the position of the double bond in the five-membered ring. The observed effects of substituents
Zur Kenntnis der Sesquiterpene und Azulene. 109. Mitteilung. Über stereoisomere Bicyclo-[0, 3, 5]-decan-8-ole und deren Wasserabspaltungsprodukte
作者:E. Kováts、A. Fürst、Hs. H. Günthard
DOI:10.1002/hlca.19540370216
日期:——
Destillation der Produkte der katalytischen Hydrierung von Δ1,7-Bicyclo-[0,3,5]-decen-8-on (I) konnten neben dem Kohlenwasserstoff cis-Bicyclo-[0,3,5]-decan (IV) und dem cis-Bicyclo-[0,3,5]-decan-8-on (II) die beiden stereoisomeren Alkohole cis-Bicyclo-[0,3,5]-decan-trans-8-ol (IIIa) und cis-Bicyclo-[0,3,5]-decan-cis-8-ol (IIIb) in reiner Form isoliert werden. Auf Grund von physikalischen und chemischen
Watanabe, Pharmaceutical Bulletin, 1957, vol. 5, p. 426,429
作者:Watanabe
DOI:——
日期:——
41. Azulenes. Part II. Exploration of new synthetic routes
作者:J. W. Cook、R. Philip、A. R. Somerville
DOI:10.1039/jr9480000164
日期:——
Buffered acetolyses of .beta.-cyclooctatetraenylethyl brosylates. Isomerization to tetrahydroazulenoid products in response to homoallylic electron deficiency