Ward, Yancey D.; Villanueva, Lawrence A.; Allred, Gary D.; Liebeskind, Lanny S. published the article 《Stereocontrolled Oxidative Addition of Zerovalent Molybdenum to Enantiomerically Pure Allylic Acetates with Either Inversion or Retention at the Stereogenic Center》. Keywords: molybdenum dihydropyranone chiral complex preparation; oxidative addition molybdenum complex dihydropyranone acetate; glucose dihydropyranone acetate addition molybdenum complex; galactose dihydropyranone acetate addition molybdenum complex; arabinose dihydropyranone acetate addition molybdenum complex; crystal structure molybdenum dihydropyranone complex; mol structure molybdenum dihydropyranone complex; solvent effect addition molybdenum dihydropyranone acetate.They researched the compound: Potassiumtris(1-pyrazolyl)borohydride( cas:18583-60-3 ).Recommanded Product: Potassiumtris(1-pyrazolyl)borohydride. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:18583-60-3) here.
In CH2Cl2 (DMF)3Mo(CO)3 undergoes oxidative addition to enantiomerically pure allylic acetates of dihydropyranones derived from D-glucose, D-galactose and D- and L-arabinose. After addition of K hydridotris(1-pyrazolyl)borate (KTp), π-allylmolybdenum complexes are isolated. The stereochem. of the oxidative addition can be controlled with high selectivity to give a π-allylmolybdenum complex (e.g., I or II) through either a retention or inversion mechanism depending on the reaction conditions. Mo(CO)3(toluene) reacts through a retention pathway exclusively. The pyranose-derived π-allylmolybdenum complexes described in this study are readily available on large scale in high yield and high enantiopurity from inexpensive materials making these complexes very useful in enantiocontrolled organic synthesis. The crystal structure of I was determined
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Reference:
Piperazine – Wikipedia,
Piperazines – an overview | ScienceDirect Topics