A convenient synthesis ofp-substituted 1-arylsulfonyl-pyrrolidin-2-ones
摘要:
A convenient and novel method of cyclisation of 4-(4-substituted-phenylsulfonamido)-butanoic acids to their corresponding p-substituted 1-arylsulfonyl-pyrrolidin-2-ones was achieved by using polyphosphate ester (PPE). The reaction times were considerably reduced, with an increase in yields, when PPE was used in combination with a catalytic amount of pyridine.
A convenient synthesis ofp-substituted 1-arylsulfonyl-pyrrolidin-2-ones
摘要:
A convenient and novel method of cyclisation of 4-(4-substituted-phenylsulfonamido)-butanoic acids to their corresponding p-substituted 1-arylsulfonyl-pyrrolidin-2-ones was achieved by using polyphosphate ester (PPE). The reaction times were considerably reduced, with an increase in yields, when PPE was used in combination with a catalytic amount of pyridine.
A convenient synthesis of<i>p</i>-substituted 1-arylsulfonyl-pyrrolidin-2-ones
作者:Muhammad Zareef、Rashid Iqbal、Khalid M. Khan、Javid H. Zaidi、Zia-Ullah、Muhammad Arfan
DOI:10.1080/14786410802090375
日期:2009.3.20
A convenient and novel method of cyclisation of 4-(4-substituted-phenylsulfonamido)-butanoic acids to their corresponding p-substituted 1-arylsulfonyl-pyrrolidin-2-ones was achieved by using polyphosphate ester (PPE). The reaction times were considerably reduced, with an increase in yields, when PPE was used in combination with a catalytic amount of pyridine.