Select the statements that correctly describe the regio- and stereochemical outc

Question

Select the statements that correctly describe the regio- and stereochemical outcome of the hydroboration-oxidation reaction:

(A) syn-addition of H-B species;

(B) anti-addition of H-B species

(C) hydrogen adds first, followed by rearrangement of the resulting carbocation to a more stable species, then boron adds last;

(D) oxidation step (cleavage of C-B and formation of C-O bond) is accompanied by inversion of configuration;

(E) oxidation step (cleavage of C-B and formation of C-O bond) is accompanied by retention of configuration

Select the statements that correctly describe the regio- and stereochemical outcome of the hydroboration-oxidation reaction: (A) syn-addition of H-B species; (B) anti-addition of H-B species (C) hydrogen adds first, followed by rearrangement of the resulting carbocation to a more stable species, then boron adds last; (D) oxidation step (cleavage of C-B and formation of C-O bond) is accompanied by inversion of configuration; (E) oxidation step (cleavage of C-B and formation of C-O bond) is accompanied by retention of configuration A, C and D B, C, and D A and D B and C A and E B abd E

Explanation / Answer

A and E

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