Preparation of lactone-fused aromatic compounds

Details Preparation of lactone-fused aromatic compounds Preparation of lactone-fused aromatic compounds

1983-06-06

1986-01-28

Fan, Jane T.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

549289, 549290, 549310, 549307, C07D30783, C07D31120

Patent

active

045672814

ABSTRACT:
This invention is a process for cyclizing an ortho-alkenyl arenol, wherein the double bond of the alkenyl moiety is one or two carbons removed from the aromatic ring, with carbon monoxide, wherein the process comprises contacting an ortho-alkenyl arenol with carbon monoxide in the presence of a catalytic amount of a catalyst comprising (1) a rhodium-carbonyl complex and (2) an amine with a pK.sub.a of 6 or greater, arsine, phosphine, stibine or mixture thereof, under conditions such that a lactone-fused aromatic compound is prepared.

REFERENCES:
patent: 3462458 (1969-08-01), McIntyre et al.
patent: 4036854 (1977-07-01), Chang
Falbe et al., CA 62, 1558g.
Falbe, Carbon Monoxide in Organic Synthesis, Springer Verlag, N.Y., (1970), pp. 147-174.
Toshihira, CA 47, 12757i.
Matsuda, CA, vol. 69, 95586g, 1968.

Affiliated with

Also associated with

Rating

Preparation of lactone-fused aromatic compounds 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 lactone-fused aromatic compounds, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of lactone-fused aromatic compounds will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1307075