Synthesis of Aminoalkylisothiuronium Salts and their Conversion to Mercaptoalkylguanidines and Thiazolines<sup>2</sup>
作者:David G. Doherty、Raymond Shapira、W. T. Burnett
DOI:10.1021/ja01578a022
日期:1957.11
Ion Exchange Studies of Transguanylation Reactions. II. Rearrangement of 3-Aminopropylisothiourea and N-Substituted Aminoethyl- and Aminopropylisothioureas to Mercaptoalkylguanidines and 2-Aminothiazolines or Penthiazolines
作者:Joseph X. Khym、David G. Doherty、Raymond Shapira
DOI:10.1021/ja01546a038
日期:1958.7
intratransguanylation is dependent on pH as well as on the number of carbon atoms between the amino and isothiourea groups. The aminoethyl- and aminopropylisothioureas intratransguanylate readily at neutral pH but 5,4- aminobutylisothiourea does not. At pH's 3--6, 2-aminothiazolines and - penthiazolines are formed, whereas in strong ailali, mixtures of mercaptoguanidines and mercaptoamines are formed. NAlkyl substitution