报告了一种高度立体选择性的协议,用于定制功能化碳环结构单元(β-羟基酯)和双环内酯,其立体阵列包含连续的叔甲醇和全碳立体中心。介绍了烯丙基和炔丙基铟与受阻 α,α-二取代环烷酮的有效不对称诱导和非对映选择性加成。代表性产物的立体化学是从单晶 X 射线晶体结构分析中明确建立的,并提出了一种合理的反应途径来支持高非对映面选择性。
报告了一种高度立体选择性的协议,用于定制功能化碳环结构单元(β-羟基酯)和双环内酯,其立体阵列包含连续的叔甲醇和全碳立体中心。介绍了烯丙基和炔丙基铟与受阻 α,α-二取代环烷酮的有效不对称诱导和非对映选择性加成。代表性产物的立体化学是从单晶 X 射线晶体结构分析中明确建立的,并提出了一种合理的反应途径来支持高非对映面选择性。
Indium-assisted aluminium-based stereoselective allylation of prostereogenic α,α-disubstituted cycloalkanones and imines
作者:Chennakesava Reddy、Srinivasarao Arulananda Babu、Nayyar Ahmad Aslam
DOI:10.1039/c4ra04293j
日期:——
Al0 for the allylation of a variety of prostereogenic α,α-disubstituted (hindered) cycloalkanones, 1,2-dione-based systems and various imino systems (CN functional groups) is reported. The stereoselective InCl3-catalyzed Al-based allylation of various 2-substituted-2-carbethoxycycloalkanones gave the corresponding products with moderate to excellent diastereoselectivity. The allylation and propargylation
Construction of Functionalized Carbocycles Having Contiguous Tertiary Carbinol and All-Carbon Stereogenic Centers
作者:Chennakesava Reddy、Srinivasarao Arulananda Babu、Nayyar Ahmad Aslam、Vadla Rajkumar
DOI:10.1002/ejoc.201201382
日期:2013.4
A highly stereoselective protocol is reported for customizing functionalized carbocyclic building blocks (β-hydroxy esters) and bicyclic lactones with a stereoarray that contains contiguous tertiary carbinol and all-carbon stereocenters. The efficient asymmetric induction and diastereofacial selective addition of allyl and propargyl indiums to hindered α,α-disubstituted cycloalkanones is presented
报告了一种高度立体选择性的协议,用于定制功能化碳环结构单元(β-羟基酯)和双环内酯,其立体阵列包含连续的叔甲醇和全碳立体中心。介绍了烯丙基和炔丙基铟与受阻 α,α-二取代环烷酮的有效不对称诱导和非对映选择性加成。代表性产物的立体化学是从单晶 X 射线晶体结构分析中明确建立的,并提出了一种合理的反应途径来支持高非对映面选择性。