Methane sulfonic acid derivatives

Details Methane sulfonic acid derivatives Methane sulfonic acid derivatives

1986-11-26

1987-09-15

Ramsuer, Robert W.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

544165, 544167, 549439, 560142, C07C14356

Patent

active

046938508

ABSTRACT:
Novel synthetic steps and intermediates leading to guanidines such as the anti-diabetic compound linogliride. Included is a hydrogen peroxide oxidation of a thiourea (II) to a sulfonic acid (I) which may then be reacted with morpholine to form the carboximidamide (III): ##STR1##

REFERENCES:
patent: 4210658 (1980-07-01), Durant et al.
patent: 4265896 (1981-05-01), Durant et al.
patent: 4381395 (1983-04-01), Teraji et al.
Walter et al, Liebigs Ann. Chem., 722, pp. 98-109 (1969).
Yarovenko et al, Chemical Abstracts, vol. 76, No. 59163c (1972).

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