Cycloadditions of allylsilanes, part 13. Lewis acid-promoted stereospecific [2+2] cycloaddition of crotylsilanes and methyl propynoate
摘要:
The titanium tetrachloride-promoted reaction of the (Z)- and (E)-crotylsilanes 6 and 9 with methyl propynoate (1) provides by stereospecific [2+2] cycloaddition the cis- and trans-3,4-disubstituted cyclobutenes 7 and 10. (C) 1998 Elsevier Science Ltd. All rights reserved.
Cycloadditions of allylsilanes, part 13. Lewis acid-promoted stereospecific [2+2] cycloaddition of crotylsilanes and methyl propynoate
摘要:
The titanium tetrachloride-promoted reaction of the (Z)- and (E)-crotylsilanes 6 and 9 with methyl propynoate (1) provides by stereospecific [2+2] cycloaddition the cis- and trans-3,4-disubstituted cyclobutenes 7 and 10. (C) 1998 Elsevier Science Ltd. All rights reserved.
Stereochemical course of the allylsilane based cyclopentane annulation
作者:Rick L. Danheiser、Toshiaki Takahashi、Béla Bertók、Brian R. Dixon
DOI:10.1016/s0040-4039(00)79243-4
日期:1993.6
Allylsilanes function as three-carbon components in a highly stereoselective [3+2] annulation strategy for the synthesis of tri- and tetrasubstituted five-membered carbocycles.