Appeal No. 1997-0158
Application No. 08/026,581
wherein R and R are defined above,1 2
under effective reduction conditions with formic
acid in an amount of about 1 to 1000 mol % in the presence of
a palladium catalyst in an amount of about 0.1 to 100 mol %.
As evidence of obviousness, the examiner relies on the
following prior art:
Nozaki 4,177,220 Dec. 4,
1979
Gryaznov et al. (Gryaznov) 4,388,479 Jun. 14,
1983
Claims 1 and 17 through 23 stand rejected under 35 U.S.C.
§ 103 as unpatentable over Gryaznov in view of Nozaki.
We affirm.
Appellants do
not dispute that Gryaznov
describes the
hydrogenatio n of the
claimed alkyne with hydrogen in the presence of a catalyst
3
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