Stereoretentive Pd-catalysed Stille cross-coupling reactions of secondary alkyl azastannatranes and aryl halides
作者:Ling Li、Chao-Yuan Wang、Rongcai Huang、Mark R. Biscoe
DOI:10.1038/nchem.1652
日期:2013.7
process for the stereoretentive cross-coupling of secondary alkyl azastannatrane nucleophiles with aryl chlorides, bromides, iodides and triflates. Coupling partners with a wide range of electronic characteristics are well tolerated. The reaction occurs with minimal isomerization of the secondary alkyltin nucleophile, and with retention of absolute configuration. This process constitutes the first
Stereospecific Palladium‐Catalyzed Acylation of Enantioenriched Alkylcarbastannatranes: A General Alternative to Asymmetric Enolate Reactions
作者:Chao‐Yuan Wang、Glenn Ralph、Joseph Derosa、Mark R. Biscoe
DOI:10.1002/anie.201609930
日期:2017.1.16
We report the development of a Pd‐catalyzed process for the crosscoupling of unactivated primary, secondary, and tertiary alkylcarbastannatrane nucleophiles with acyl electrophiles. Reactions involving optically active alkylcarbastannatranes occur with exceptional stereofidelity and with net retention of absolute configuration. Because the stereochemistry of the resulting products is entirely reagent‐controlled