Mechanochemical Synthesis of Substituted 4H-3,1-Benzoxazin-4-ones, 2-Aminobenzoxazin-4-ones, and 2-Amino-4H-3,1-benzothiazin-4-ones Mediated by 2,4,6-Trichloro-1,3,5-triazine and Triphenylphosphine
A mild and convenient approach for the synthesis of 2-substituted 4H-3,1-benzoxazin-4-ones, 2-aminobenzoxazin-4-ones, and 2-amino-4H-3,1-benzothiazin-4-ones under solvent-assisted grinding is reported. In the presence of 2,4,6-trichloro-1,3,5-triazine and catalytic triphenylphosphine, cyclodehydration of N-substituted anthranilic acid derivatives proceeded rapidly within minutes at room temperature
Mc Coy, American Chemical Journal, 1899, vol. 21, p. 146,147
作者:Mc Coy
DOI:——
日期:——
SALTS OF PAROXETINE
申请人:SMITHKLINE BEECHAM PLC
公开号:EP1091958A1
公开(公告)日:2001-04-18
Two-component initiator system (amine-free) with very good storage stability and particular suitability for acid systems
申请人:Utterodt Andreas
公开号:US20070040151A1
公开(公告)日:2007-02-22
A two-component initiator system having accelerators for curing polymerizable materials comprising the following components: (a) a hydroperoxide compound containing one or more hydroperoxide groups that are bound to a tertiary carbon; (b) a thiourea derivative; and (c) as accelerator, a copper compound which is soluble in the preparation is preferably free of amine and is particularly suited for polymerizable dental compositions.