Efficient synthesis of benzothieno[3,2-d]-1,2,4-triazolo [1,5-a]pyrimidin-5(1H)-ones via a tandem aza-Wittig/heterocumulene-mediated annulation

DOI: 10.1002/jhet.158

Source and publish data:

Journal of Heterocyclic Chemistry p. 903 - 908 (2009)

Update date:2022-08-04

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Authors:

Xu, Sheng-Zhen

Cao, Min-Hui

Chen, Chang-Shui

Ding, Ming-Wu

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Article abstract of DOI:10.1002/jhet.158

(Chemical Equation Presented) The carbodiimides 2, obtained from reactions of iminophosphorane 1 with isocyanates, reacted with hydrazine to give selectively 3-amino-2-arylaminobenzothieno[3,2-d]pyrimidin-4(3H)-ones 4. Reactions of 4 with triphenylphosphi

Full text of DOI:10.1002/jhet.158

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