Diastereoselective Pomeranz–Fritsch–Bobbitt synthesis of (S)-(−)-salsolidine using (R)-N-tert-butanesulfinylimine as a substrate
摘要:
The highly diastereoselective addition of methyl Grignard reagent to chiral (R)-N-tert-butanesulfinylimine 8 was the key step in the synthesis of (S)-(-)-salsolidine 1 of high enantiomeric purity. The resulting addition product, tert-butanesulfinylamide 9, was then subjected to cyclization via amine 10 and Pomeranz-Fritsch aminoacetal 11. (c) 2006 Elsevier Ltd. All rights reserved.
Highly Diastereoselective and Enantioselective Synthesis of Enantiopure <i>C</i><sub>2</sub>-Symmetrical Vicinal Diamines by Reductive Homocoupling of Chiral <i>N-tert-</i>Butanesulfinyl Imines
作者:Yu-Wu Zhong、Kenji Izumi、Ming-Hua Xu、Guo-Qiang Lin
DOI:10.1021/ol0479803
日期:2004.12.1
[reaction: see text] An efficient and straightforward method for the preparation of highly enantiomerically enriched C2-symmetrical vicinaldiamines by the reductive homocoupling of aromatic N-tert-butanesulfinyl imines in the presence of SmI2 and HMPA was developed. It gives access to a variety of enantiopure C2-symmetrical 1,2-diamines in a very mild and practical way.
Diastereoselective Pomeranz–Fritsch–Bobbitt synthesis of (S)-(−)-salsolidine using (R)-N-tert-butanesulfinylimine as a substrate
作者:Agnieszka Kościołowicz、Maria D. Rozwadowska
DOI:10.1016/j.tetasy.2006.05.011
日期:2006.5
The highly diastereoselective addition of methyl Grignard reagent to chiral (R)-N-tert-butanesulfinylimine 8 was the key step in the synthesis of (S)-(-)-salsolidine 1 of high enantiomeric purity. The resulting addition product, tert-butanesulfinylamide 9, was then subjected to cyclization via amine 10 and Pomeranz-Fritsch aminoacetal 11. (c) 2006 Elsevier Ltd. All rights reserved.
A Highly Efficient and Direct Approach for Synthesis of Enantiopure β-Amino Alcohols by Reductive Cross-Coupling of Chiral <i>N</i>-<i>tert</i>-Butanesulfinyl Imines with Aldehydes
作者:Yu-Wu Zhong、Yi-Zhou Dong、Kai Fang、Kenji Izumi、Ming-Hua Xu、Guo-Qiang Lin
DOI:10.1021/ja054401w
日期:2005.8.1
approach for the synthesis of optically pure beta-amino alcohols by the SmI2-induced reductive cross-coupling of chiral N-tert-butanesulfinyl imines with aldehydes was developed. This method allows the preparation of a broad range of chiral beta-amino alcohols, including functionalized ones under mild conditions. It provides a straightforward access to enantiopure beta-amino alcohols that are widely