α,β-Unsaturated Carboxylic Acid Derivatives. XI. Convenient Synthesis oftert-Butyl 2-Alkoxy- and Hydroxy-2-acetylamino-3-mono- or 3,3-dihaloalkanoates
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چکیده
منابع مشابه
SYNTHESIS OF 3-ARYLMETHYL-4- THIAZOLIDINE-CARBOXYLIC ACID-2-ONES AND 2-THIONES
Barium salts of dibenzylidene cystines 8a-c were obtained from the reaction of Lcystine with benzaldehyde or its derivatives in the presence of barium hydroxide. Their reduction with zinc and hydrochloric acid in methanol yielded the Narylmethylcysteines ?9a-c?. These can, in turn, be converted by esterification into the methyl esters ?10 a-c. ?Reaction of N, N'-carbonyl diimidazole (Im C...
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A facile and inexpensive synthesis of a series of novel methylenedioxy-bearing 2-(benzofuran-2-yl)-quinoline-3-carboxylic acid derivatives 3a-h via the one-pot reaction of ethyl 2-chloromethyl-6,7-methylenedioxyquinoline-3-carboxylate (5) with various substituted salicylaldehydes 6a-g as well as 2-hydroxy-1-naphthaldehyde (6h) is described. Substrate 5 was synthesized by the Friedländer condens...
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barium salts of dibenzylidene cystines 8a-c were obtained from the reaction of lcystine with benzaldehyde or its derivatives in the presence of barium hydroxide. their reduction with zinc and hydrochloric acid in methanol yielded the narylmethylcysteines ?9a-c?. these can, in turn, be converted by esterification into the methyl esters ?10 a-c. ?reaction of n, n'-carbonyl diimidazole (im co...
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* corresponding author. e-mail: [email protected] Butyl-substituted 1-amino-3-oxocyclohexane-1-carboxylic acid derivatives have been prepared from 5,5-tethered dienes of (2R)-2,5-dihydro-2-isopropyl-3,6-dimethoxypyrazine in stereoselective synthesis. RCM reactions of the diene afforded a heterospirenone which was the substrate for the conjugated addition reaction with lithium dibutylcuprate. Hydrol...
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ژورنال
عنوان ژورنال: Bulletin of the Chemical Society of Japan
سال: 1976
ISSN: 0009-2673,1348-0634
DOI: 10.1246/bcsj.49.1909