The tricyclic ketone has been condensed with the magnesiumsalt of the cyclopropanonehemiketal to give the cyclopropanol , readily converted to Torgov's compound and then to(±)estrone .
Sunder, Nurani M.; Patil, Prakash A.; Narasimhan, Nurani S., Journal of the Chemical Society. Perkin transactions I, 1990, # 5, p. 1331 - 1334
作者:Sunder, Nurani M.、Patil, Prakash A.、Narasimhan, Nurani S.
DOI:——
日期:——
Stereoselective, Dual-Mode Ruthenium-Catalyzed Ring Expansion of Alkynylcyclopropanols
作者:Barry M. Trost、Jia Xie、Nuno Maulide
DOI:10.1021/ja807894t
日期:2008.12.24
A novel, dual-pathway ring expansion of alkynylcyclopropanols is described. On treatment with a ruthenium catalyst, these compounds undergo highly selective enlargement to either (Z)-alkylidene cyclobutanones or P-substituted cyclopentenones. The unique ability to access the least selective double bond isomers of alkylidene cyclobutanones and the dramatic shift of reactivity observed further illustrate the particular intricacies of ruthenium catalysis when compared to other alkynophilic transition metals.
Transformation of 1-(1,2-propadienyl)cyclopropanols into substituted hydroquinones employing octacarbonyldicobalt
作者:Yufu Owada、Takeshi Matsuo、Nobuharu Iwasawa
DOI:10.1016/s0040-4020(97)00367-0
日期:1997.8
A novel transformation of 1-(1,2-propadieny])cyclopropanols into substituted 1,4-hydroquinones has been developed utilizing the interaction of 1.2-propadienes and octacarbonyldicobalt (Co-2(CO)(8)) This reaction was applied to the synthesis of vitamin E and K analogs. (C) 1997 Elsevier Science Ltd.
SALAUEN J.; BENNANI F.; COMPAIN J.-C.; FADEL A.; OLLIVIER J., J. ORG. CHEM., 1980, 45, NO 21, 4129-4135
作者:SALAUEN J.、 BENNANI F.、 COMPAIN J.-C.、 FADEL A.、 OLLIVIER J.