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。
HETEROCYCLIC COMPOUND AND USE THEREOF
申请人:KOIKE Tatsuki
公开号:US20120059030A1
公开(公告)日:2012-03-08
The present invention provides a heterocycle derivative having a superior amyloid β production inhibitory activity and/or a superior γ-secretase modulation activity, and use thereof. A compound represented by the formula (I):
wherein each symbol is as defined in the present specification, or a salt thereof.
Tandem ring-closing metathesis–radical cyclization based on 4-(phenylseleno)butanal and methyl 3-(phenylseleno)propanoate — a route to bicyclic compounds
作者:Derrick L. J. Clive、Hua Cheng
DOI:10.1039/b100336b
日期:——
α,Ï-(Phenylseleno) carbonyl compounds, such as
4-(phenylseleno)butanal (1) and methyl 3-(phenylseleno)propanoate (2), are
easily converted by anionic reactions into substances that undergo
sequential ring-closing metathesis and radical cyclization, affording
bicyclic products.
Chemoselectivity of Nitroxylation of Cage Hydrocarbons
作者:Yu. N. Klimochkin、M. V. Leonova、E. A. Ivleva
DOI:10.1134/s107042802010005x
日期:2020.10
mixtures with acetic acid, aceticanhydride, and methylene chloride has been studied. More reactive substrates react with lowest selectivity regardless of the reaction medium. The primary nitroxylation products of cage hydrocarbons are nitrooxy derivatives. The compositions of reaction mixtures obtained in the reactions of some cage hydrocarbons with nitric anhydride in carbon tetrachloride have been determined