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The metal-ammonia reduction of mono- and dinaphthylbenzenes

Journal Article · · Journal of Organic Chemistry; (United States)
DOI:https://doi.org/10.1021/jo00299a023· OSTI ID:5891555
;  [1]
  1. Indiana Univ.-Purdue Univ., Indianapolis (United States)
The metal-ammonia reduction of 1- and 2-phenylnaphthalene (9 and 10, respectively), 1,3-bis(1-naphthyl)benzene (5), 1,3-bis(2-naphthyl)benzene (6), 1,4-bis(1-naphthyl)benzene (7), and m-quinquephenyl (8) has been investigated. 9 affords a mixture of isomeric dihydro products together with 1-phenyl-1,2,3,4-tetrahydronaphthalene, and the effect of metal, temperature, and quenching methods on the product distribution is reported. 10 provided only a single dihydro (1,4-) isomer plus a tetrahydro product. Both 5 and 7 provided a number of dihydro, tetrahydro, hexahydro, and octahydro products. On the other hand, 6 afforded high yields of a single tetrahydro product with lithium, and exclusively an octahydro product when 5-7 mol of sodium was used. In contrast to the terphenyls, which seem to have a propensity for inner-ring reduction, none of the naphthyl benzenes showed any tendency to reduce in the central benzene ring. m-Quinquephenyl reduced in two rings with no evidence for reduction in the central or outer rings.
OSTI ID:
5891555
Journal Information:
Journal of Organic Chemistry; (United States), Journal Name: Journal of Organic Chemistry; (United States) Vol. 55:12; ISSN JOCEA; ISSN 0022-3263
Country of Publication:
United States
Language:
English