Synthesis of first representatives of 3,3′-bi(6,8-dialkyl-2,4-dioxa-6,8-diazabicyclo[3.3.0]octan-7-ones)
作者:Andrey S. Sigachev、Angelina N. Kravchenko、Galina A. Gazieva、Pavel A. Belyakov、Natal'Ya G. Kolotyrkina、Oleg V. Lebedev、Nina N. Makhova、Konstantin A. Lyssenko
DOI:10.1002/jhet.5570430523
日期:2006.9
The first representatives of 3,3′-bi(2,4-dioxa-6,8-diazabicyclo[3.3.0]octan-7-ones) have been synthesized by a reaction of glyoxal as form of 2,2′-bi(4,5-dihydroxy-1,3-dioxalane) with N,N′-dialkylureas. Their structures have been supported by X-ray analysis. 1,3-Dialkylimidazolidine-2,4-diones (hydantoins) have been isolated as by-products and their formation mechanism has been experimentally confirmed
3,3'-bi(2,4-dioxa-6,8-diazabicyclo [3.3.0] octan-7-ones)的第一个代表是通过乙二醛以2,2'-bi的形式合成的(4,5-二羟基-1,3-二氧杂戊环)与N,N′-二烷基脲。X射线分析支持了它们的结构。1,3-二烷基咪唑烷-2,4-二酮(乙内酰脲)已被分离为副产物,其形成机理已通过实验证实。