New Preparation of Benzylic Aluminum and Zinc Organometallics by Direct Insertion of Aluminum Powder
作者:Tobias D. Blümke、Klaus Groll、Konstantin Karaghiosoff、Paul Knochel
DOI:10.1021/ol202733v
日期:2011.12.16
benzylic aluminum sesquichlorides under mild conditions (THF, 20 °C, 3–24 h) without homocoupling (<5%). These new benzylic organometallics reacted smoothly with various electrophiles (Pd-catalyzed cross-couplings, or Cu-mediated acylations, allylations, or 1,4-addition reactions). Electron-poor benzylic chlorides or substrates prone to Wurtz coupling can be converted to benzylic zinccompounds by the
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.
A substituted phenylalkylimidazole compound of the formula: ##STR1## wherein R is an alkyl group or an alkenyl group, X is a halogen atom, a methyl group, a methoxy group, a phenoxy group, a trifluoromethyl group or a dimethylamino group, and n is an integer of 1 or 2.
A substituted phenylalkylimidazole compound of the formula:
wherein R is an alkyl group or an alkenyl group, X is a halogen atom, a methyl group, a methoxy group, a phenoxy group, a trifluoromethyl group or a dimethylamino group, and n is an integer of 1 or 2.
式中的取代苯基烷基咪唑化合物:
其中 R 是烷基或烯基,X 是卤素原子、甲基、甲氧基、苯氧基、三氟甲基或二甲基氨基,n 是 1 或 2 的整数。
The Dual Roles of Oxodiperoxovanadate Both as a Nucleophile and an Oxidant in the Green Oxidation of Benzyl Alcohols or Benzyl Halides to Aldehydes and Ketones