引用本文:
Ru Yu CHEN, Jian Wu WANG. STUDY ON THE SYNTHESIS OF A NEW TYPE OF PHOSPHORUS HETEROCYCLIC COMPOUNDS-PYRAZOLO[3, 4-d]-1, 3, 2-DIAZAPHOSPHORIN-6-ONE[J]. Chinese Chemical Letters,
1990, 1(1): 59-60.
Citation: Ru Yu CHEN, Jian Wu WANG. STUDY ON THE SYNTHESIS OF A NEW TYPE OF PHOSPHORUS HETEROCYCLIC COMPOUNDS-PYRAZOLO[3, 4-d]-1, 3, 2-DIAZAPHOSPHORIN-6-ONE[J]. Chinese Chemical Letters, 1990, 1(1): 59-60.
Citation: Ru Yu CHEN, Jian Wu WANG. STUDY ON THE SYNTHESIS OF A NEW TYPE OF PHOSPHORUS HETEROCYCLIC COMPOUNDS-PYRAZOLO[3, 4-d]-1, 3, 2-DIAZAPHOSPHORIN-6-ONE[J]. Chinese Chemical Letters, 1990, 1(1): 59-60.
STUDY ON THE SYNTHESIS OF A NEW TYPE OF PHOSPHORUS HETEROCYCLIC COMPOUNDS-PYRAZOLO[3, 4-d]-1, 3, 2-DIAZAPHOSPHORIN-6-ONE
摘要:
1-substituted-5-benzoylamino-4-pyrazolecarboxamides(2)were prepared by the reaction of 1-substituted pyrazolo[3, 4-d]-oxazinone(1)with amines in benzene.The compound 2 was refluxed with excess LiAlH4 in a mixture of THF and ether, one of the two carbamoyl groups in the molecule 2 was reduced selectively.As the results, 1-substituted-5-benzylamino-4-pyrazolecarboxamides (3) were obtained.Compounds 3reacted with Cl2PPh-X, or P(NET2)3, producing the title compounds(4).The conditions of the reactions were studied.
English
STUDY ON THE SYNTHESIS OF A NEW TYPE OF PHOSPHORUS HETEROCYCLIC COMPOUNDS-PYRAZOLO[3, 4-d]-1, 3, 2-DIAZAPHOSPHORIN-6-ONE
Abstract:
1-substituted-5-benzoylamino-4-pyrazolecarboxamides(2)were prepared by the reaction of 1-substituted pyrazolo[3, 4-d]-oxazinone(1)with amines in benzene.The compound 2 was refluxed with excess LiAlH4 in a mixture of THF and ether, one of the two carbamoyl groups in the molecule 2 was reduced selectively.As the results, 1-substituted-5-benzylamino-4-pyrazolecarboxamides (3) were obtained.Compounds 3reacted with Cl2PPh-X, or P(NET2)3, producing the title compounds(4).The conditions of the reactions were studied.
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