title: Studies in prebiotic synthesis. IV. Conversion of 4-aminoimidazole-5-carbonitrile derivatives to purines.
mesh_terms: D000225:Adenine / Q000138:chemical synthesis; D000577:Amides / Q000138:chemical synthesis; D000578:Amidines; D000588:Amines; D002254:Carbonates; D055598:Chemical Phenomena; D002621:Chemistry; D002854:Chromatography, Paper; D003485:Cyanates; D006147:Guanine / Q000138:chemical synthesis; D006856:Hydrogen Cyanide; D006863:Hydrogen-Ion Concentration; D006868:Hydrolysis; D007093:Imidazoles / Q000138:chemical synthesis*; D009570:Nitriles / Q000138:chemical synthesis*; D010777:Photochemistry; D011687:Purines / Q000138:chemical synthesis*; D000644:Quaternary Ammonium Compounds; D013696:Temperature; D013997:Time Factors; D014508:Urea
chemical_list: D000577:Amides; D000578:Amidines; D000588:Amines; D002254:Carbonates; D003485:Cyanates; D007093:Imidazoles; D009570:Nitriles; D011687:Purines; D000644:Quaternary Ammonium Compounds; D006856:Hydrogen Cyanide; D006147:Guanine; D014508:Urea; D000225:Adenine