Diastereoselective Synthesis of Functionalized 5‐Amino‐3,4‐Dihydro‐2
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‐Pyrrole‐2‐Carboxylic Acid Esters: One‐Pot Approach Using Commercially Available Compounds and Benign Solvents
作者:Sara Meninno、Mario Carratù、Jacob Overgaard、Alessandra Lattanzi
DOI:10.1002/chem.202005262
日期:2021.3.8
A novel three‐step four‐transformation approach to highly functionalized 5‐amino‐3,4‐dihydro‐2H‐pyrrole‐2‐carboxylic acid esters, starting from commercially available phenylsulfonylacetonitrile, aldehydes, and N‐(diphenylmethylene)glycine tert‐butyl ester, was developed. The one‐pot strategy delivered this class of amidines bearing, for the first time, three contiguous stereocenters, in good to high
一种新颖的三步四变换方法以高度官能化的5-氨基-3,4-二氢-2 ħ吡咯-2-羧酸酯,由市售phenylsulfonylacetonitrile,醛和起始ñ - (二苯基亚甲基)甘氨酸叔-开发了丁酯。单锅策略首次提供了这类具有三个连续立构中心的idine,具有良好至高收率和非对映选择性。整个过程使用碳酸二乙酯和2-甲基四氢呋喃作为良性溶剂,在无金属条件下操作。该过程可以方便地扩大规模,并证明了该产品的综合实用性。