Open-Chain Reissert Compounds: One-Pot Synthesis and Utility in Synthesis of Unsymmetrical Imides, .alpha.-Acylamino Carboxamides, Imidazolinones, and Hydantoins
摘要:
Acyclic Reissert compounds 2 and bis(Reissert compound)s 3-5 can be conveniently prepared in a biphasic system without isolation of the intermediate cr-amino nitriles. Treatment of 2 with sodium hydride affords substituted unsymmetrical imides such as 8. Oxidative hydrolysis of 2 by hydrogen peroxide converts the nitrile groups to primary amides, giving acyl derivatives of alpha-amino carboxamides 9, whereas substituted analogs 7 undergo cyclization to imidazolinones 11. Hydrogen peroxide treatment of alpha-cyano carbamate Reissert compounds, substituted (13) or not (12), affords substituted hydantoins 14.
Open-Chain Reissert Compounds: One-Pot Synthesis and Utility in Synthesis of Unsymmetrical Imides, .alpha.-Acylamino Carboxamides, Imidazolinones, and Hydantoins
摘要:
Acyclic Reissert compounds 2 and bis(Reissert compound)s 3-5 can be conveniently prepared in a biphasic system without isolation of the intermediate cr-amino nitriles. Treatment of 2 with sodium hydride affords substituted unsymmetrical imides such as 8. Oxidative hydrolysis of 2 by hydrogen peroxide converts the nitrile groups to primary amides, giving acyl derivatives of alpha-amino carboxamides 9, whereas substituted analogs 7 undergo cyclization to imidazolinones 11. Hydrogen peroxide treatment of alpha-cyano carbamate Reissert compounds, substituted (13) or not (12), affords substituted hydantoins 14.
Open-Chain Reissert Compounds: One-Pot Synthesis and Utility in Synthesis of Unsymmetrical Imides, .alpha.-Acylamino Carboxamides, Imidazolinones, and Hydantoins
作者:Jean-Pierre Leblanc、Harry W. Gibson
DOI:10.1021/jo00084a025
日期:1994.3
Acyclic Reissert compounds 2 and bis(Reissert compound)s 3-5 can be conveniently prepared in a biphasic system without isolation of the intermediate cr-amino nitriles. Treatment of 2 with sodium hydride affords substituted unsymmetrical imides such as 8. Oxidative hydrolysis of 2 by hydrogen peroxide converts the nitrile groups to primary amides, giving acyl derivatives of alpha-amino carboxamides 9, whereas substituted analogs 7 undergo cyclization to imidazolinones 11. Hydrogen peroxide treatment of alpha-cyano carbamate Reissert compounds, substituted (13) or not (12), affords substituted hydantoins 14.