Spirocycle assembly through selective tandem ring closing metathesis reactions
摘要:
A range of functionalised spirocyclic systems have been prepared under mild and neutral conditions by tandem selective ring closing olefin metathesis reactions. Additionally, a marked preference for 5-membered ring closure over 7-membered ring closure was observed which appears to be a result of a kinetically favoured cyclisation process. (C) 1999 Elsevier Science Ltd. All rights reserved.
Synthesis of olefins from sterically hindered alcohols by pyrolysis of thiocarbonate O-esters
作者:H. Gerlach、Tran Thi Houng、W. Müller
DOI:10.1039/c39720001215
日期:——
Stericallyhindered alcohols e.g.(I; R = H) were acylated with O-4-methylphenyl chlorothioformate in high yield and the resulting thiocarbonates were converted into olefins by pyrolysis.
用O -4-甲基苯基氯硫代甲酸酯将位阻受阻的醇(如(I; R = H))酰化,并通过热解将所得的硫代碳酸酯转化为烯烃。
Synthesis and Properties of Certain Spiro[4.4]nonenes<sup>1</sup>
作者:Donald J. Cram、B. L. Van Duuren
DOI:10.1021/ja01618a046
日期:1955.7
Pyrolyses of cyclopropylketene dimer and ethyl cyclopropaneacetate