Syntheses with organoboranes. VII, monohydroboration of conjugated dienes with catecholborane catalyzed by complexes of Nickel(II) chloride and Cobalt(II) chloride with diphosphines

DOI: 10.1016/S0040-4039(97)01691-2

Source and publish data:

Tetrahedron Letters p. 7279 - 7282 (1997)

Update date:2022-08-03

Topics:

Authors:

Zaidlewicz, Marek

Meller, Jerzy

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Article abstract of DOI:10.1016/S0040-4039(97)01691-2

The monohydroboration of representative conjugated dienes 1-7 with catecholborane in the presence of SmI₃, t-BuOSmI₂, LaI₃, Ti(OPr(i))₄, iron(II), nickel(II) and cobalt(II) chloride complexes with dppe, dppp and dppb was examined. NiCl₂(dppe), NiCl₂(dppp) and CoCl₂(dppp) shoned catalytic activity. The 1,2-addition products were obtained, no 1,4-addition was observed. The reactivity in the presence of NiCl₂(dppe) decreased in the order acyclic dienes > cyclic dienes >>1-decene.

Full text of DOI:10.1016/S0040-4039(97)01691-2

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