New tetrahedral boron heterobicycles: Cyclocondensation of phenylboronic acid with β-keto butanoic acid N-acyl hydrazones
作者:Antigoni Kotali、Anna Maniadaki、Elvira Kotali、Philip A. Harris、Ewa Różycka-Sokołowska、Piotr Bałczewski、John A. Joule
DOI:10.1016/j.tetlet.2016.12.060
日期:2017.2
2]oxazaborines were prepared in high yields via the reaction of phenylboronic acid with various N-acylhydrazones of 3-keto-2-(2′-phenylhydrazono) butanoic acid in the presence of 4 Å molecular sieves. These derivatives represent a novel class of zwitterionic, tetrahedral boron heterocycles. Single crystal X-ray analysis of a representative boron containing product is reported.
一系列的4-苯基-2-芳基-8-甲基-6-氧代-7-苯基肼-2 H,4 H,6 H,7 H,8 H [1,3,4,2]-恶二氮杂硼[2,3,4,2]通过在4Å存在下使苯基硼酸与3-酮-2-(2'-苯基肼基)丁酸的各种N-酰基hydr反应,高产率地制备,3- b ] [1,3,2]恶唑嘌呤分子筛。这些衍生物代表一类新型的两性离子四面体硼杂环。报告了代表性的含硼产物的单晶X射线分析。