Preparation of pyrroles

Details Preparation of pyrroles Preparation of pyrroles

2000-04-20

2000-12-19

Stockton, Laura L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D207323

Patent

active

061629286

ABSTRACT:
A process for preparing pyrroles of the formula I: ##STR1## where R.sub.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and are hydrogen atoms, alkyl groups having from 1 to 12 carbon atoms or cycloalkyl groups having from 3 to 12 carbon atoms, by dehydrogenation of pyrrolidines of the formula II: ##STR2## where R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are as defined above, in the presence of a supported noble metal catalyst is described. In this process, the dehydrogenation is carried out at from 150 to 300.degree. C. and pressures of from 0.01 to 50 bar and the noble metal catalyst comprises from 30 to 100% by weight of:

REFERENCES:
patent: 3522269 (1970-07-01), Guyer
patent: 4762929 (1988-08-01), Rebafka

Affiliated with

Also associated with

Rating

Preparation of pyrroles does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Preparation of pyrroles, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of pyrroles will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-272218