在In / CuI / I 2或In / AgI / I 2系统存在下,使用未活化的烷基卤化物在水中进行醛的Barbier-Grignard型烷基化反应(包括脂肪族)的有效方法。该反应在水中比在有机溶剂中更有效地进行。In,CuI或AgI和I 2对反应的有效进行都是必不可少的。研究并提出了一种以4-戊烯为底物的自由基型反应机理。
Nucleophilic Additions of Arylzinc Compounds to Aldehydes Mediated by CrCl<sub>3</sub>: Efficient and Facile Synthesis of Functionalized Benzhydrols, 1(3<i>H</i>)-Isobenzofuranones, Benzyl Alcohols, or Diaryl Ketones
benzhydrols 4a-f in good yields. From arylzinc compounds 1a,b, 3-aryl-1(3H)-isobenzofuranones 3a-f were given by the CrCl(3)-mediated reaction with arylaldehydes 2a-f. Diaryl ketones 5a-e were obtained in good yields by the addition of excess amount of benzaldehyde as an oxidant to the resulting solution after the CrCl(3)-mediated reaction between arylzinc compounds 1c-g and arylaldehydes 2b,g was completed
A general synthesis of β-methylated secondary alcohols via tandem α-methylation/transfer hydrogenation from non-methylated ketones with methanol by a Cp*Ir complex [Cp*Ir(2,2′-bpyO)(OH)]Na with a bipyridine-based functional ligand was reported. Remarkably, β-methylated secondary alcohols can be obtained under milder reaction conditions using methanol as the methylating agent (C1 source) by employing
A new method for alkylation of aromatic aldehydes using alkylboron chloride derivatives in the presence of oxygen
作者:George W Kabalka、Zhongzhi Wu、Yuhong Ju
DOI:10.1016/s0040-4020(02)00237-5
日期:2002.4
Reactions of aromatic aldehydes with alkylboron chloride derivatives in the presence of oxygen have been investigated. Dialkylboron chlorides react with aryl aldehydes to produce arylalkylmethanols in good to excellent yields. Under the same reaction conditions, alkylboron dichlorides lead to the formation of arylalkyl chlorides.
Alkylation of aromatic aldehydes with alkylboron chloride derivatives
作者:George W Kabalka、Zhongzhi Wu、Yuhong Ju
DOI:10.1016/s0040-4020(00)01160-1
日期:2001.2
The reaction of aryl aldehydes with alkylboron chlorides has been investigated. Monoalkylboron dichlorides react with aryl aldehydes in hexane under reflux conditions to give a mixture of dichloroarylmethane and benzyl chloride. Under the same reaction conditions, dialkylboron chlorides lead to formation of a mixture of benzyl chloride and the chloroalkylation product. In the presence of a base such
[EN] 6-SUBSTITUTED 2,3,4,5-TETRAHYDRO-1H-BENZO[D]AZEPINES AS 5-HT2C RECEPTOR AGONISTS<br/>[FR] 2,3,4,5-TETRAHYDRO-1H-BENZO[D]AZEPINES SUBSTITUES EN POSITION 6 EN TANT QU'AGONISTES DE RECEPTEUR 5-HT2C
申请人:LILLY CO ELI
公开号:WO2005082859A1
公开(公告)日:2005-09-09
The present invention provides 6-substituted 2,3,4,5-tetrahydro-1H-benzo[d]azepines of Formula I as selective 5-HT2C receptor agonists for the treatment of 5-HT2C associated disorders including obesity, obsessive/compulsive disorder, depression, and anxiety: I where: R6 is -C=C-R10, -O-R12, -S-R14, or -NR24R25; and other substituents are as defined in the specification.