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α-芳基-α-肼基膦酸酯的对映选择性合成。

Enantioselective synthesis of α-aryl α-hydrazino phosphonates.

作者信息

Alberca Saúl, Romero-Parra Javier, Fernández Israel, Fernández Rosario, Lassaletta José M, Monge David

机构信息

Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla and Centro de Innovación en Química Avanzada (ORFEO-CINQA) C/ Prof. García González, 1 41012 Sevilla Spain

Departamento de Química Orgánica y Fisicoquímica, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile Olivos 1007 Santiago 8380544 Chile.

出版信息

Chem Sci. 2024 Apr 23;15(20):7725-7731. doi: 10.1039/d4sc00822g. eCollection 2024 May 22.

DOI:10.1039/d4sc00822g
PMID:38784752
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11110148/
Abstract

Catalysts generated by the combination of pyridine-hydrazone ,-ligands and Pd(TFA) have been applied to the addition of arylboronic acids to formylphosphonate-derived hydrazones, yielding α-aryl α-hydrazino phosphonates in excellent enantioselectivities (96 → 99% ee). Subsequent removal of the benzyloxycarbonyl (Cbz) -protecting group afforded key building blocks en route to appealing artificial peptides, herbicides and antitumoral derivatives. Experimental and computational data support a stereochemical model based on aryl-palladium intermediates in which the phosphono hydrazone coordinates in its -configuration, maximizing the interactions between the substrate and the pyridine-hydrazone ligand.

摘要

由吡啶腙配体与Pd(TFA)组合生成的催化剂已应用于芳基硼酸与甲酰基膦酸酯衍生腙的加成反应,以优异的对映选择性(96→99% ee)生成α-芳基α-肼基膦酸酯。随后去除苄氧羰基(Cbz)保护基团,得到了通往引人注目的人工肽、除草剂和抗肿瘤衍生物的关键构建块。实验和计算数据支持基于芳基钯中间体的立体化学模型,其中膦酰腙以其构型配位,使底物与吡啶腙配体之间的相互作用最大化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/de517ad94fbe/d4sc00822g-s3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/a78fda68cecf/d4sc00822g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/2d155f9ab5c5/d4sc00822g-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/f21e55f247ec/d4sc00822g-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/dc6d7c35f908/d4sc00822g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/5477e0d37d88/d4sc00822g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/74146eb21069/d4sc00822g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/de517ad94fbe/d4sc00822g-s3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/a78fda68cecf/d4sc00822g-f1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/2d155f9ab5c5/d4sc00822g-s1.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/f21e55f247ec/d4sc00822g-s2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/dc6d7c35f908/d4sc00822g-f2.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/5477e0d37d88/d4sc00822g-f3.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/74146eb21069/d4sc00822g-f4.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/486c/11110148/de517ad94fbe/d4sc00822g-s3.jpg

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