α-Alkylation and Asymmetric Transfer Hydrogenation of Tetralone via Hydrogen Borrowing and Dynamic Kinetic Resolution Strategy Using a Single Iridium(III) Complex
作者:Seung Wook Kim、Elizabeth A. Foker、William J. Wolf、Ryan A. Woltornist、Andrii Shemet、Shelby McCowen、Eric M. Simmons、Ziqing Lin、Brian L. He、Robert Menger、Xuejun Xu、Sloan Ayers、Matthew H. Bunner、Amy A. Sarjeant
DOI:10.1021/acs.orglett.4c00718
日期:2024.4.19
Here we present a novel strategy for the synthesis of enantiomerically enriched tetrahydronaphthalen-1-ols. The reaction proceeds via an alkylation (viahydrogen borrowing) and ammonium formate-mediated asymmetrictransferhydrogenation (viadynamickineticresolution), giving alkylated tetralols in high yields and good enantio- and diastereoselectivity across a diverse range of both alcohol and tetralone
An efficient and versatile synthesis of chiral tetralins has been developed using both inter- and intra-molecular Friedel Crafts alkylation as a key step. The readily available hydronaphthalene substrates were prepared via a highly enantioselective metal-catalyzed ring opening of meso-oxabicyclic alkenes followed by hydrogenation. A wide variety of complex tetracyclic compounds have been isolated with high levels of regio-, diastereo-, and enantioselectivity.
Ganguly, Science and Culture, 1941, vol. 7, p. 320