Heterocycles p. 2397 - 2406 (1993)
Update date:2022-08-04
Topics: Isolation and Purification Further Elaboration Sila-Pummerer Rearrangement
Yamano, Toru
Tanaka, Mitsutaka
Takanohashi, Kunio
An efficient preparation of a d-biotin intermediate, (+/-)-(3aα,4α,6aα)-1,3-dibenzyl-3a,4,6,6a-tetrahydro-4-hydroxy-1H-thieno<3,4-d>imidazol-2(3H)-one was accomplished by use of 1,3-cycloaddition of a thiocarbonyl ylide, Curtius rearrangement and sila-Pum
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