A novel 2:1 cycloadduct of dimethyl acetylenedicarboxylate with 3,5-diphenyl-4-methoximino-4H-pyrazole 1,2-dioxide
摘要:
Two equivalents of dimethyl acetylenedicarboxyl ate react with 3,5-diphenyl-4-methoximino-4H-pyrazole 1,2-dioxide in acetonitrile under reflux. The major product was shown by X-ray analysis to be a 5,8-epoxyisoxazolo[2,3-d]-[1,4]-diazepine derivative. (C) 2003 Elsevier Science Ltd. All rights reserved.
Hansen, John F.; Easter, John A., Journal of Heterocyclic Chemistry, 1994, vol. 31, # 6, p. 1481 - 1486
作者:Hansen, John F.、Easter, John A.
DOI:——
日期:——
A novel 2:1 cycloadduct of dimethyl acetylenedicarboxylate with 3,5-diphenyl-4-methoximino-4H-pyrazole 1,2-dioxide
作者:Andre L. Kilpatrick、Kalyan Nagulapalli、Joel M. Esken、Gregory M. Ferrence、John F. Hansen
DOI:10.1016/s0040-4039(03)00781-0
日期:2003.5
Two equivalents of dimethyl acetylenedicarboxyl ate react with 3,5-diphenyl-4-methoximino-4H-pyrazole 1,2-dioxide in acetonitrile under reflux. The major product was shown by X-ray analysis to be a 5,8-epoxyisoxazolo[2,3-d]-[1,4]-diazepine derivative. (C) 2003 Elsevier Science Ltd. All rights reserved.