Process for the nuclear chlorination of toluene. [Cocatalyst consisting of phenoxthine derivatives]

Patent · Tue Apr 24 04:00:00 EST 1984

OSTI ID:6386259

Hattori, R; Abe, Y; Kanno, S; Maeda, S

Para-chlorotoluene is prepared selectively at high yield by nuclear chlorination of toluene, in the presence of a Lewis acid catalyst, and a co-catalyst comprising at least one compound selected from the group consisting of phenoxthine derivatives and highly chlorinated phenoxthine derivatives obtained by chlorinating said phenoxthine derivatives at higher degree, said phenoxthine derivatives being represented by the general formula of: 2-x,6-y,8-(CL-),9-(CH3-),(R) M-Phenoxathine wherein R represents methyl group or groups at the position-1 and/or position-3, m is zero or an integer of 1 or 2, X is hydrogen or chlorine atom, and Y is chlorine atom or methyl group; and wherein m is an integer of 1 or 2 and X is hydrogen or chlorine atom when Y is chlorine atom, X is chlorine atom when Y is methyl group and m is zero, and X is hydrogen atom when Y is methyl group and m is an integer of 1 or 2.

• Assignee: Hodogaya Chemical Co., Ltd. (Japan)
• Patent Number(s): US 4444983
• OSTI ID: 6386259
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKYLATED AROMATICS
AROMATICS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL COMPOSITION
CHEMICAL REACTIONS
CHLORINATION
HALOGENATION
HYDROCARBONS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
LEWIS ACIDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
TOLUENE