Asymmetric synthesis of 5-arylmethylpyrrolidin-2-ones and 2-arylmethylpyrrolidines
摘要:
An efficient methodology for the enantioselective synthesis of 5-arylmethylpyrrolidin-2-ones and 2-arylmethylpyrrolidines has been devised. The key step is the stereoselective hydrogenation of the N-acylhydrazonium salts obtained from the corresponding arylmethylene hydrazides. These highly conjugated compounds are readily prepared by reacting a chiral succinimide with a variety of arylmethyl Grignard reagents. Removal of the chiral auxiliary and Subsequent reduction complete the synthesis of the title Compounds. (C) 2003 Elsevier Ltd. All rights reserved.
Asymmetric synthesis of 5-arylmethylpyrrolidin-2-ones and 2-arylmethylpyrrolidines
摘要:
An efficient methodology for the enantioselective synthesis of 5-arylmethylpyrrolidin-2-ones and 2-arylmethylpyrrolidines has been devised. The key step is the stereoselective hydrogenation of the N-acylhydrazonium salts obtained from the corresponding arylmethylene hydrazides. These highly conjugated compounds are readily prepared by reacting a chiral succinimide with a variety of arylmethyl Grignard reagents. Removal of the chiral auxiliary and Subsequent reduction complete the synthesis of the title Compounds. (C) 2003 Elsevier Ltd. All rights reserved.
An efficient methodology for the enantioselective synthesis of 5-arylmethylpyrrolidin-2-ones and 2-arylmethylpyrrolidines has been devised. The key step is the stereoselective hydrogenation of the N-acylhydrazonium salts obtained from the corresponding arylmethylene hydrazides. These highly conjugated compounds are readily prepared by reacting a chiral succinimide with a variety of arylmethyl Grignard reagents. Removal of the chiral auxiliary and Subsequent reduction complete the synthesis of the title Compounds. (C) 2003 Elsevier Ltd. All rights reserved.