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ChemicalBook CAS DataBase List Vardenafil IMpurity 3
1255919-01-7

Vardenafil IMpurity 3 synthesis

4synthesis methods
-

Yield:-

Steps:

Multi-step reaction with 4 steps
1.1: hydrazine hydrate / methanol / 1.5 h / 28 °C
2.1: methanol / 1.5 h / 65 °C
2.2: 4 h / 60 - 80 °C
3.1: chlorosulfonic acid / 0.17 h / 0 °C
4.1: dichloromethane / 1.5 h / 25 - 30 °C

References:

Reddy, Vajrala Venkata;Naga Brahmeswara Rao, Mandava Venkata;Reddy, Ghanta Mahesh;Mukkanti, Khagga;Reddy, Ganta Madhusudhan [Synthetic Communications,2012,vol. 42,# 23,p. 3513 - 3523]

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