Acid stabilized compositions of 2,2,2-trichloro-1-(N-hydrocarbyl

Details Acid stabilized compositions of 2,2,2-trichloro-1-(N-hydrocarbyl Acid stabilized compositions of 2,2,2-trichloro-1-(N-hydrocarbyl

1980-02-01

1982-11-16

Springer, David B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20730

Patent

active

043594220

ABSTRACT:
In a process of preparing 2,2,2-trichloro-1-(N-hydrocarbylpyrryl-2)-ethanol by mixing and reacting essentially equimolar quantities of chloral and N-hydrocarbylpyrrole in a liquid reaction system containing a protonic acid added in the form of an organic acid, improvements have been made. The improvement involves (i) performing the reaction in a methylene chloride reaction medium containing protonic acid added in the form of a carboxylic acid whose acidic dissociation constant is not substantially greater than that of acetic acid, and (ii) proportioning the relative amounts of the chloral, N-hydrocarbylpyrrole and methylene chloride reaction medium so as to result in the formation of a solution of 2,2,2-trichloro-1-(N-hydrocarbylpyrryl-2)-ethanol in the reaction medium having a concentration in the range of about 1 to about 8 molar.

REFERENCES:
patent: 2695301 (1954-11-01), Blicke
patent: 4238396 (1980-12-01), Kondo et al.

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