Reactivity and selectivity in intermolecular insertion reactions of chlorophenylcarbene
作者:Michael P. Doyle、Jack Taunton、Su-Min Oon、Michael T.H. Liu、N. Soundararajan、Matthew S. Platz、James E. Jackson
DOI:10.1016/s0040-4039(00)82210-8
日期:1988.1
Reactivities for intermolecular C-H/Si-H/Sn-H insertion reactions of chlorophenylcarbene follow the order tri-n-butyltinhydride⪢diphenylsilanetriethylsilane⪢ cumenethylbenzene⪢toluene, and these reactions are competitive with addition to the double bond of α,β-unsaturated esters.
Salicylic acid copolymers and their metal salts, production process thereof, color-developing agents comprising metal salts of the copolymers and color-developing sheets employing the agents
申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0268878A2
公开(公告)日:1988-06-01
Disclosed herein are salicylic acid copolymers having a weight average molecular weight of 500 10,000 and obtained (a) by condensing salicylic acid (i) with a benzyl alcohol (ii) and/or benzyl ether (iii) or a benzyl halide (iv) in the presence of an acid catalyst or (b) by reacting a co-condensation resin of (i) and (ii) and/or (iii) with (iv) or (c) by reacting a co-condensation resin of (i) and (ii) and/or (iii) or (iv) with a styrene derivative in the presence of an acid catalyst; multivalent metal salts of the salicylic acid copolymers; color-developing agents comprising the multivalent metal salts; and color-developing sheets suited for pressure-sensitive copying paper and comprising the color-developing agents. Their production processes are also disclosed.
Indium-Catalyzed Direct Chlorination of Alcohols Using Chlorodimethylsilane−Benzil as a Selective and Mild System
作者:Makoto Yasuda、Satoshi Yamasaki、Yoshiyuki Onishi、Akio Baba
DOI:10.1021/ja048688t
日期:2004.6.1
The InCl3-catalyzed reaction of alcohols with chlorodimethylsilane (HSiMe2Cl) in the presence of benzil gave the corresponding organic chlorides under mild conditions. Benzil significantly changes the reaction course because the reducing product through dehydroxyhydration was obtained in the absence of benzil. The secondary or tertiary alcohols were effectively chlorinated. The substrates bearing acid-sensitive functional groups were also applied to this system. The highly selective chlorination of the tertiary site was observed in the competitive reaction between tertiary and primary alcohols. The highly coordinated hydrosilane generated from benzil and HSiMe2Cl is an important intermediate.
Kayser, Annales de Chimie (Cachan, France), 1936, vol. <11> 6, p. 145,176
作者:Kayser
DOI:——
日期:——
DOYLE, MICHAEL P.;TAUNTON, JACK;QON, SU-MIN;LIU, MICHAEL T. H.;SOUNDARARA+, TETRAHEDRON LETT., 29,(1988) N 46, C. 5863-5866
作者:DOYLE, MICHAEL P.、TAUNTON, JACK、QON, SU-MIN、LIU, MICHAEL T. H.、SOUNDARARA+