Silver(I) ion catalyzed rearrangements of strained .SIGMA. bonds. XI. Silver(I)-assisted methoxyl group ionization. Some mechanistic and synthetic considerations derived from the behavior of endo-2-methoxytricyclo[4.1.0.03,7]heptanes
Cerium(IV), as a selective and efficient catalyst for alcoholyses of allylic and tertiary benzylic alcohols
作者:Nasser Iranpoor、Enayatholah Mothaghineghad
DOI:10.1016/s0040-4020(01)80857-7
日期:1994.1
An efficient and selective method is described for the catalytic conversion of allylic, and tertiary benzylic alcohols into their corresponding ethers in the presence of Ce(IV) under solvolytic and non-solvolytic conditions.
The methanolysis of allylicalcohols, benzylic tertiary alcohols and epoxides in the presence of a catalytic amount of cericammoniumnitrate (CAN) is shown to be catalysed by protons generated from the oxidation of methanol. This reaction is also catalysed by Lewis acids.
Molybdenum(II)- and Tungsten(II)-Catalyzed Allylic Substitution
作者:Andrei V. Malkov、Ian R. Baxendale、Dalimil Dvořák、Darren J. Mansfield、Pavel Kočovský
DOI:10.1021/jo9821776
日期:1999.4.1
The molybdenum(II) complexes Mo(CO)(5)(OTf)(2) (7a), [Mo(CO)(4)Br(2)](2) (8a), their tungsten(II) congeners 7b and 8b, and bimetallic complex Mo(CO)(3)(MeCN)(2)(SnCl(3))Cl (9a) have been found to catalyze the C-C bond-forming allylic substitution with silyl enol ethers derived from beta-dicarbonyls (e.g., 16 + 30 --> 46) or from simple ketones (e.g., 16 + 32 --> 50), aldehydes, and esters as nucleophiles
Mild Two-Step Process for the Transition-Metal-Free Synthesis of Carbon−Carbon Bonds from Allylic Alcohols/Ethers and Grignard Reagents
作者:Xinping Han、Yanhua Zhang、Jimmy Wu
DOI:10.1021/ja100747n
日期:2010.3.31
A mild two-step process for the regioselective, transition-metal-free preparation of carbon-carbon bonds from allylic alcohols/ethers and Grignardreagents is described. This process obviates the need for the harsh deprotection conditions usually required for removal of methyl ethers. The synthesis is accomplished by photochemically promoted allylic substitution reactions of allylic alcohols and ethers
HYDROXIDE-CATALYZED FORMATION OF SILICON-OXYGEN BONDS BY DEHYDROGENATIVE COUPLING OF HYDROSILANES AND ALCOHOLS
申请人:CALIFORNIA INSTITUTE OF TECHNOLOGY
公开号:US20170029447A1
公开(公告)日:2017-02-02
The present disclosure is directed to methods for dehydrogenatively coupled hydrosilanes and alcohols, the methods comprising contacting an organic substrate having at least one organic alcohol moiety with a mixture of at least one hydrosilane and sodium and/or potassium hydroxide, the contacting resulting in the formation of a dehydrogenatively coupled silyl ether. The disclosure further described associated compositions and methods of using the formed products.