Pyrolysis of Benzyl 2-Oxazolecarbamates and Benzyl 4-Alkylallophanates

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概要

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• The pyrolysis of benzyl 2-oxazolecarbamates (I) and benzyl 4-alkylallophanates (II) was investigated. Heating of benzyl 5-phenyl-2-oxazolecarbamate (Ia) at 230℃ gave benzyl alcohol and 2-phenyl-6-(5-phenyl-2-oxazolyl)-5H-oxazolo [3,2-α] [1,3,5] triazine-5,7-(6H)-dione (IIIa). Compound IIIa was also obtained by heating the azide prepared from 5-phenyl-2-oxazolecarbohydrazide (IVa). In the same way, 2-methyl-6-(5-methyl-2-oxazolyl)-5H-oxazolo [3,2-α] [1,3,5] triazine-5,7 (6H)-dione (IIIb) and 2-phenyl-6-(5-phenyl-2-thiazolyl)-5H-thiazolo [3,2-α] [1,3,5] triazine-5,7 (6H)-dione (IIIc) were obtained from the corresponding hydrazides (IVb and IVc). Next, heating of benzyl 4-(2-phenylethyl)-allophanate (IIa) at 230℃ gave cyanuric acid (VII), benzyl (2-phenylethyl) carbamate (VIII) and 1,3-bis (2-phenylethyl)-1,3,5-triazine-2,4,6 (1H, 3H, 5H)-trione (IX).

• 公益社団法人日本薬学会の論文
• 1982-11-25

著者

• 田中 千秋

  Osaka University of Pharmaceutical Sciences

• 山本 典子

  Osaka College Of Pharmacy

• 柴田 恵

  Osaka College Of Pharmacy

• 田中 千秋

  Osaka College Of Pharmacy

• 那須 啓子

  Osaka College of Pharmacy

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