URABE, HIROKAZU;KUWAJIMA, ISAO, TETRAHEDRON LETT., 1983, 24, N 39, 4241-4244
作者:URABE, HIROKAZU、KUWAJIMA, ISAO
DOI:——
日期:——
Construction of Bicyclic Ring Systems via a Transannular SmI<sub>2</sub>-Mediated Ketone−Olefin Cyclization Strategy
作者:Gary A. Molander、Barbara Czakó、Michael Rheam
DOI:10.1021/jo062292d
日期:2007.3.1
cyclooctene, cyclodecene, and cycloundecene derivatives revealed that the process proceeds with high yield and diastereoselectivity, and in the case of larger ring-sized compounds, with excellent regioselectivity. The regioselectivity of the annulation process could be rationalized based on examining the low energy conformations of the keto alkene starting materials. These results demonstrate the efficiency
Hydroxy group-assisted isomerization and alkylation of allylsilanes in basic media. α-(1-trimethylsilyallyl) ketone as an α-alkenyl ketone equivalent.
作者:Hirokazu Urabe、Isao Kuwajima
DOI:10.1016/s0040-4039(00)88311-2
日期:——
Regioselective protonation and alkylation of a certain hydroxyallylsilane have been effected in basicmedia. An application of these reactions to a facile preparation of 3-hydroxy-1,5-hexadiene systems has also been achieved.