Process for producing aromatic-containing silicone compounds

Claim 2

An improved process for producing an aromatic containing silicone compound comprising (a) reacting a aromatic organic compound of the formula, RX a with a silicone compound of the formula, R b ' Si Z 4-b in the presence of molar quantities of Mg and from 0.5 up to 1 mole of a promoter per mole of the aromatic compound which is tetrahydrofuran wherein a portion of the reactants are added to the reaction chamber and then adding from 0.1 to 1% by weight of the total reactants of Cu 2 Cl 2 as a coupler and then after a reaction period of time of 1 to 5 hours there is mixed into the reaction mixture the remaining portion of the reactants; and (b) distilling out the desired product where R is selected from the class consisting of monovalent and divalent mononuclear and binuclear aryl radicals, X is chlorine, a is a whole number that varies from 1 to 4, R' is a radical selected from the class consisting of monovalent hydrocarbon radicals. Z is selected from the class consisting of halogen and hydrocarbonoxy radicals and b varies 0 to 3.

Claim 3

The process of claim 1 wherein the reaction in step (a) is carried out at a temperature in the range of 100°-200° C for a period of time varying from 7 to 24 hours.

Claim 4

The process of claim 2 wherein the reaction is carried out at a temperature in the range of 100° to 160° C.

Claim 5

The process of claim 3 wherein there is present at least one mole of Mg for every mole of the aromatic compound.

Claim 6

The process of claim 4 comprising initiating the reaction in step (a) by adding a crystal of an iodine compound.

Claim 7

The process of claim 1 wherein further comprising adding to the initial reaction mixture a crystal of an iodine compound.

Claim 8

The process of claim 1 wherein the second portion of the reactants are added to reaction mixture after a period of reaction time varying from 1 to 5 hours.

Claim 9

The process of claim 1 wherein in the aromatic compound the R radical is phenylene.

Claim 10

The process of claim 8 wherein the aromatic compound is p-dichlorobenzene.

Claim 11

The process of claim 9 wherein in the silicon compound R' is methyl, Z is a radical selected from the class consisting of alkoxy radicals and phenoxy radicals of 1 to 8 carbon atoms.

Claim 12

The process of claim 10 wherein b is 2.

Claim 13

The process of claim 11 wherein the desired reaction product has the formulas, ##STR2## wherein R, R' and Z is as previously defined.

Claim 14

The process of claim 12 wherein the desired product is obtained in at least 50% by weight yield.

Claim 15

An improved process for producing a compound of the formula, ##STR3## in at least 50% yield comprising (a) first adding and reacting a portion of the following ingredients which comprise an aromatic organic compound of the formula, RX a with a silicon compound of the formula, R b ' Si Z 4-b in the presence of at least 2 moles of Mg per mole of the aromatic organic compound and from 0.5 to up to 1 mole of the catalytic promoter tetrahydrofuran per mole of the aromatic organic compound with from 0.1 to 1% by weight of the total reactants of Cu 2 Cl 2 (b) heating the reaction mixture in the range of 100° C to 160° C and (c) then after the reaction has been initiated adding the remaining portion of the ingredients after a period of time varying from 1 to 5 hours from the initial start of the reaction for a total reaction time varying from 7 to 24 hours and (d) distilling out the desired reaction product where R is a phenylene radical, a is 2 such that the aromatic organic compound is p-dichlorobenzene and wherein R' is methyl, Z is selected from the class consisting of alkoxy and phenoxy radicals of 1 to 8 carbon atoms and b is 2.

Claim 16

An improved process for producing a compound of the formula, ##STR3## in at least 50% yield comprising (a) first adding and reacting a portion of the following ingredients which comprise an aromatic organic compound of the formula, RX a with a silicon compound of the formula, R b ' Si Z 4-b in the presence of at least 2 moles of Mg per mole of the aromatic organic compound and from 0.5 to up to 1 mole of the catalytic promoter tetrahydrofuran per mole of the aromatic organic compound with from 0.1 to 1% by weight of the total reactants of Cu 2 Cl 2 (b) heating the reaction mixture in the range of 100° C to 160° C and (c) then after the reaction has been initiated adding the remaining portion of the ingredients after a period of time varying from 1 to 5 hours from the initial start of the reaction for a total reaction time varying from 7 to 24 hours and (d) distilling out the desired reaction product where R is a phenylene radical, a is 2 such that the aromatic organic compound is p-dichlorobenzene and wherein R' is methyl, Z is selected from the class consisting of alkoxy and phenoxy radicals of 1 to 8 carbon atoms and b is 2.