Process for producing amidine sulfonic acid intermediates for guanidines
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United States of America Patent
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Jul 25, 1989
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N/A
app pub date -
Jul 20, 1987
filing date -
Mar 15, 1985
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Expired
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Abstract
An efficient synthesis of quanidines, e.g. of the formula (III), by oxidizing a thiourea, e.g. of the following formula (II): ##STR1## with H.sub.2 O.sub.2 and a molybdenum catalyst to yield an aminoiminomethane sulfonic acid which can then be reacted with an amine followed by optional transamination steps.
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