A survey of several metavandate (VO3(-)) and chelated dioxovanadium derivatives shows that tetrabutylammonium dioxovanadium(V)dipicolinate most effectively catalyzes the deoxydehydration (DODH) of glycols to olefins in moderate to excellent yields with triphenylphosphine or sodium sulfite as reductants.
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Chapman et al. (2013) studied this question.
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