Lithiation of cyclopropyl and 2-methylcyclopropyl phenyl sulfides. Addition to carbonyl partners
作者:Barry M. Trost、Donald E. Keeley、Henry C. Arndt、James H. Rigby、Mitchell J. Bogdanowicz
DOI:10.1021/ja00451a039
日期:1977.4
2,2-Dimethyl cyclopentanones by acid catalyzed ring expansion of isopropenylcyclobutanols. A short synthesis of (±)-α-cuparenone and (±)-herbertene
作者:Angela M. Bernard、Angelo Frongia、Francesco Secci、Pier P. Piras
DOI:10.1039/b505707h
日期:——
catalyzed ring expansion of isopropenylcyclobutanols; the method allows ready access to the family of sesquiterpenes cuparanes and herbertanes, as demonstrated by the synthesis of (+/-)-alpha-cuparenone and the direct precursor of (+/-)-herbertene.