The intramolecular silyl-modified Sakurai (ISMS) reaction. A simple and versatile synthesis of tetrahydropyrans, spiro ethers, and spiro ketals
摘要:
The Intramolecular Silyl Modified Sakurai (ISMS) reaction is a powerful tool for the construction of tetrahydropyrans, spiroethers, and spiroketals. The ISMS methodology was applied to a short and stereocontrolled synthesis of a minor component of the rectal gland secretion of the female Dacus oleae fruit fly.
Tin(II) Trifluoromethanesulfonate-Catalyzed Highly Selective Synthesis of 2-Substituted 4-Methylenetetrahydropyrans from Trimethyl{2-[2-(trimethylsiloxy)ethyl]allyl}silane and Acetals
A variety of 2-substituted 4-methylenetetrahydropyrans are easily produced by the reaction of acetals with trimethyl2-[2-(trimethylsiloxy)ethyl]allyl}silane under the influence of a catalytic amount of tin(II) trifluoromethanesulfonate.
The intramolecular silyl modified sakurai (ISMS) reaction. A novel and highly convergent synthesis of oxocenes
作者:Abdelaziz Mekhalfia、István E Markó、Harry Adams
DOI:10.1016/s0040-4039(00)92307-4
日期:1991.1
By employing the intramolecular version of the SMS reaction, oxocenes, including spiroethers and spiroketals, can be prepared in a highly convergent, one-step operation.
通过使用SMS的分子内形式,可以以高度收敛的一步式操作制备茂新化合物,包括螺醚和螺酮化合物。
Novel mercuric triflate-catalyzed condensation of ketones and homoallyl alcohols
Novel condensation of ketones with homoallyl alcohols catalyzed by Hg(OTf)2 has been developed, generating a 6-membered ring ether alcohol, bisether, and olefins. The reaction is initiated b hemiacetal formation, and cyclization of the resulting oxonium cation provides the 6-membered ring carbocation as a common intermediate. Thus, it is a catalytic Prins-type condensation of non-activated homoallyl
Regiocontrol in the intramolecular silyl modified sakurai (ISMS) reaction. An efficient synthesis of a Dacus oleae fruit fly pheromone.
作者:István E. Markó、Abdelaziz Mekhalfia
DOI:10.1016/s0040-4039(00)91736-2
日期:1992.3
The ISMS reaction, which initially afforded a mixture of regioisomeric olefins, can now be controlled to produce only the exocyclic alkene. The ISMS methodology was used in a highlyefficientsynthesis of a Dacus oleae pheromone 8.
FLAME-RETARDANT POLYMER MEMBER, FLAME-RETARDANT PRODUCT, AND FLAME-RETARDING METHOD
申请人:Nitto Denko Corporation
公开号:EP2570259A1
公开(公告)日:2013-03-20
Provided is a flame-retardant member having flexibility and a high degree of flame retardancy. A flame-retardant polymer member of the present invention is a flame-retardant polymer member having a polymer layer (B) and a flame-retardant layer (A) on at least one surface of the polymer layer (B), in which the flame-retardant layer (A) is a layer containing a layered inorganic compound (f) in a polymer (X) .