Some Unusual Reactions of 6-Chloropurines with Thioureas. 6-Alkylthiopurines and 2,2-Diamino-2H-thiazolo[3,4,5-gh]purines from 2-(Purin-6-yl)-2-thiopseudoureas1
Some Unusual Reactions of 6-Chloropurines with Thioureas. 6-Alkylthiopurines and 2,2-Diamino-2H-thiazolo[3,4,5-gh]purines from 2-(Purin-6-yl)-2-thiopseudoureas<sup>1</sup>