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Title: Synthesis of 2-(amino acid ester)-6-(1,1-dimethylethyl)-3-cyclohexyl-2H-3,4-dihydro-1,3,2-benzoxazaphosphorin 2-sulfides/oxides
Authors: Reddy, P Vasu Govardhana
Haranath, P
Reddy, C Suresh
Raju, C Naga
Keywords: 1,3,2-Benzoxazaphosphorin-2 sulphides/oxides
amino acid methyl ester hydrochlorides
Issue Date: Jul-2005
Publisher: CSIR
IPC CodeInt.Cl.7 C 07 D
Abstract: Synthesis of 2-(amino acid ester)-6-(1,1-dimethylethyl)-3-cyclohexyl-2H-3,4-dihydro-1,3,2-benzoxazaphosphorin 2-sulfides/oxides 4a-j are accomplished through a two step process. It involves the prior preparation of the monochloride as 2-chloro-6-(1,1-dimethylethyl)-3-cyclohexyl-3,4-dihydro-2H-1,3,2-benzoxazaphosphorin 2-sulfide/oxide 3a/3b and their subsequent reaction with the amino acid methyl ester hydrochlorides 1a-e in dry tetrahydrofuran in the presence of triethylamine at various temperatures. They are characterized by IR, 1H, 13C, 31P NMR and mass spectral data.
Page(s): 1437-1440
ISSN: 0975-0983(Online); 0376-4699(Print)
Source:IJC-B Vol.44B(07) [July 2005]

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