Highly Enantioselective Rhodium-Catalyzed Asymmetric 1,4-Addition Reactions of Arylboronic Acids to Acyclic α,β-Unsaturated Compounds: The Formal Synthesis of (−)-Indatraline
作者:Wei-Ting Wei、Jiann-Yih Yeh、Ting-Shen Kuo、Hsyueh-Liang Wu
DOI:10.1002/chem.201102073
日期:2011.10.4
were synthesized from (−)‐5‐oxobornyl acetate and utilized in the asymmetric 1,4‐addition reaction of arylboronic acids with acyclic α,β‐unsaturated compounds. Low catalytic loading of the complex, generated in situ from 1 and [RhCl(C2H4)2}2], provides adducts in good to excellent yields and excellent enantioselectivities. This method was used for the formal total synthesis of (−)‐indatraline.
是做二烯就是做的:稳定的手性双环[2.2.1]二烯配体是由(-)-5-氧代冰片乙酸酯合成的,用于芳基硼酸与无环α,β-不饱和化合物的不对称1,4加成反应。由1和[RhCl(C 2 H 4)2 } 2 ]原位生成的络合物的低催化负载量提供了良好至优异收率和优异对映选择性的加合物。该方法用于(-)-茚达林的正式全合成。