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A convenient biphasic process for the monosilylation of symmetrical 1,n-primary diols

โœ Scribed by Chengzhi Yu; Bin Liu; Longqin Hu

Publisher
Elsevier Science
Year
2000
Tongue
French
Weight
115 KB
Volume
41
Category
Article
ISSN
0040-4039

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## Abstract For Abstract see ChemInform Abstract in Full Text.

A convenient synthesis of symmetrical N,
A convenient synthesis of symmetrical N,Nโ€ฒ-dialkylureas by the reactions of 4-chloro-5H-1,2,3-dithiazol-5-one with alkylamines
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Treatment of 4-chloro-5H-1,2,3-dithiazol-5-one with primary and secondary alkylamines (>2 equiv.) in CH 2 Cl 2 at rt afforded symmetrical N,N%-disubstituted ureas in moderate to good yields. Similarly, the reactions with amino acid ester hydrochlorides in the presence of Et 3 N (>3 equiv.) under the