Titanium catalyst and organotitanium reacting reagent,...

Details Titanium catalyst and organotitanium reacting reagent,... Titanium catalyst and organotitanium reacting reagent,...

2005-03-15

2005-03-15

Nazario-Gonzalez, Porfirio (Department: 1621)

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Organic compound containing

C502S150000, C502S170000, C502S103000, C502S104000, C556S051000, C556S052000, C556S054000, C560S180000

Reexamination Certificate

active

06867161

ABSTRACT:
A titanium catalyst for reaction between a compound having a carbon-carbon unsaturated bond and a compound having an electrophilic functional group or an electrophilic reagent, said titanium catalyst being composed of a titanium compound represented by the formula (1) belowin-line-formulae description="In-line Formulae" end="lead"?TiX1X2X3X4  (1)in-line-formulae description="In-line Formulae" end="tail"?(where X1, X2, X3, and X4denote independently a halogen atom, C1-20alkoxyl group, aralkyloxy group, aryloxy group, or —NRxRy group (where Rx and Ry denote independently a C1-20alkyl group or aralkyl group), and any two of X1, X2, X3, and X4may form a ring.) and a Grignard reagent represented by the formula (2) below in a molar amount 1.5-2.5 times as much as the titanium compound.in-line-formulae description="In-line Formulae" end="lead"?R1MgX5  (2)in-line-formulae description="In-line Formulae" end="tail"?(where R1denotes a C2-10alkyl group having a hydrogen atom at the β position and X5denotes a halogen atom.)The titanium catalyst of the present invention activates the carbon-carbon unsaturated bond, which has a comparatively low reactivity, thereby catalyzing the reaction with an electrophilic functional group. It is inexpensive and industrially advantageous. When applied to reaction between a compound having a carbon-carbon unsaturated bond and an electrophilic functional group, it yields industrially a variety of adducts of a compound having a carbon-carbon unsaturated bond and a compound having an electrophilic functional group, and it also yields a variety of intramolecular adducts of a compound having a carbon-carbon unsaturated bond and an electrophilic functional group in the same molecule.

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