Cyclization process utilizing copper aluminum borate as a cataly

Details Cyclization process utilizing copper aluminum borate as a cataly Cyclization process utilizing copper aluminum borate as a cataly

1988-03-29

1994-07-26

Waddell, Frederick E.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D20904

Patent

active

053328388

ABSTRACT:
The present invention is a cyclization process utilizing the catalyst copper aluminum borate which process comprises the step of contacting (1) a compound having a fragment in which a carbon-containing chain of at least three atoms in sequence is bonded at one end thereof to a nitrogen, oxygen, or sulfur atom, and at the opposite end to a carbon, nitrogen, oxygen, or sulfur atom, where the latter are bonded to at least one hydrogen atom; with (2) a catalyst comprising at least one member selected from the group consisting of copper aluminum borate and zero valent copper on a support comprising aluminum borate, under conditions sufficient to effect ring closure between the ends of the fragment to obtain a compound comprising a heterocyclic ring.

REFERENCES:
patent: 3285932 (1966-11-01), Illingworth
patent: 3699120 (1972-10-01), Bakke
patent: 4024171 (1977-05-01), McArthur
patent: 4590324 (1986-05-01), Satek
patent: 4740647 (1988-04-01), Hussmann

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