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Methylation of thiourea

The alkyl esters of N-benzimidazol-2-yl-carbamic acid (22) can be prepared by the methylation of thiourea with dimethyl sulfate and the subsequent N-acylation in alkaline medium of the S-methyl-isothiourea formed (23) with the alkyl ester of chloroformic acid. Finally, N,N -bis(alkoxycarbonyl)-S-methylthiourea (24), obtained as an intermediate product is condensed with o-phenylene diamine in glacial acetic acid. [Pg.390]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]

See also in sourсe #XX -- [ Pg.12 , Pg.52 ]



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Methyl thiourea

Of thiourea

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