Enzymatic halocyclization of allenic alcohols and carboxylates: a biocatalytic entry to functionalized O-heterocycles
作者:J. Naapuri、J. D. Rolfes、J. Keil、C. Manzuna Sapu、J. Deska
DOI:10.1039/c6gc01926a
日期:——
Chloroperoxidase fromCaldariomycesfumago catalyzes the aerobic oxidative halocyclization of allenic alcohols and carboxylates yielding functionalized furan and pyran heterocycles as valuable synthetic scaffolds. Thanks to an oxidase-initiated redox cascade,...
Arylative Allenol Cyclization via Sequential One‐pot Enzyme & Palladium Catalysis
作者:Janne M. Naapuri、Gustav A. Åberg、Jose M. Palomo、Jan Deska
DOI:10.1002/cctc.202001619
日期:2021.1.20
Suzuki‐type cross coupling enables the direct arylative cyclization of allenic alcohols with boronic acids. This modular approach to unsaturated five‐membered O‐heterocycles proceeds in an aqueous emulsion with air as terminal oxidant. Here, the enzymatic oxidative activation of simple halide salts acts as traceless ring‐closure‐inducing event to trigger the subsequent C−C coupling. With the original protocol