Processes for purification of 2,4-di(1-pyrrolidinyl)-6-chloropyrimidine
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United States of America Patent
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Jul 6, 1993
Issued Date -
N/A
app pub date -
Aug 19, 1992
filing date -
Dec 26, 1991
priority date (Note) -
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Abstract
The present invention involves two processes for the purification of a mixture of 2,4-di(1-pyrrolidinyl)-6-chloropyrimidine (III) ##STR1## and 4,6-di(1-pyrrolidinyl)-2-chloropyrimidine (IV) ##STR2## to where <1.0% of 4,6-di(1-pyrrolidinyl)-2-chloropyrimidine (IV) is present. In addition also disclosed is a process which not only purifies 2,4-di(1-pyrrolidinyl)-6-chloropyrimidine (III) but produces the commercially important 2,4-di(1-pyrrolidinyl)-6-(1-piperazinyl)pyrimidine (IX) directly.
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