Chemical process

Details Chemical process Chemical process

1988-03-07

1990-03-27

Reamer, James H.

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

Organic compounds

Oxygen containing

568315, 568316, 568306, 560 51, 558415, 564315, 564 88, C07C 4545

Patent

active

049122622

ABSTRACT:
According to the present invention there is provided process for preparing a compound of formula (I): ##STR1## or a salt, acylate or sulphonate derivative thereof; wherein R.sup.1 is an optionally substituted aryl group, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are selected from hydrogen, C.sub.1-4 alkyl, C.sub.1-4 alkanoyl or --CO.sub.2 R.sup.a wherein R.sup.a is C.sub.1-4 alkyl or R.sup.2 and R.sup.3 or R.sup.4 and R.sup.5 together with the carbon atom to which they are attached form a C.sub.3-6 cycloalkyl ring, provided that at least R.sub.2 and R.sup.3 or R.sup.4 and R.sup.5 are not both hydrogen and that not more than two of R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are C.sub.1-4 alkanoyl or --CO.sub.2 R.sup.a ; which process comprises reacting a compound of formula (II): ##STR2## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are as defined in relation to formula (I) with a compound of formula (III):

REFERENCES:
patent: 4695673 (1987-09-01), Heather et al.

Affiliated with

Also associated with

Rating

Chemical process does not yet have a rating. At this time, there are no reviews or comments for this patent.

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

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1652249