2-Arsonohexanoic acid is decomposed during its attempted reduction to 2-ars
enosohexanoic acid by triphenylphosphine in the presence of a catalytic amo
unt of iodine. When ascorbic acid is substituted for the triphenylphosphine
, hexanoic acid is obtained, implying that the arscorbic acid acts as a hyd
ride donor. Copyright (C) 2001 John Wiley & Sons, Ltd.