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Hydrolysis of B 2 pin 2 over Pd/C Catalyst: High Efficiency, Mechanism, and in situ Tandem Reaction
Author(s) -
Li Ning,
Shen Jialu,
Liu Xiang
Publication year - 2021
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.202001132
Subject(s) - chemistry , catalysis , hydrolysis , diphenylacetylene , boron , borylation , tandem , medicinal chemistry , reaction mechanism , stereochemistry , organic chemistry , alkyl , materials science , aryl , composite material
A facile and effective synthesis of H 2 or D 2 from Pd/C catalyzed hydrolysis of B 2 pin 2 has first been developed. Among them, B 2 pin 2 is frequently used for borylation reaction, and has rarely been used for hydrogen evolution. The kinetic isotope effects (KIEs) and tandem reaction for diphenylacetylene and norbornene hydrogenation have confirmed both two H atoms of H 2 gas are provided from H 2 O. This is contrary to other boron compounds hydrolysis (including NH 3 BH 3 , NaBH 4 ), which generates H 2 with only one H atom provided by water and the other one by boron compounds. Note that the hydrolysis of B 2 pin 2 in D 2 O also provides an easy and useful synthesis of D 2 .