A series of aminoalkylisothiuronium salts and N-substituted aminoalkylisothiuronium salts have been prepared from the corresponding aminoalkyl halide and thiourea or an N- substituted thiourea. The 1, 2-and 1, 3-aminoalkylisothioureas either underwent intratransguanylation at neutral PH to yield mercaptoalkylguanidines or were converted at acid pH to 2-aminothiazolines and 2-aminopenthiazolines. The formation of the ring ...
