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US 4,954,655 AGranted
Preparation of alkylhydrazines
AssigneeRohm and Haas Company
InventorMartha J. Kelly
Life of this patent
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Abstract
This application relates to a process for preparing alkylhydrazines from an alkene and hydrazine with an acid catalyst. More particularly, it relates to a process for preparing t-butylhydrazine from hydrazine and isobutylene in aqueous acid.
Claims15
A process for preparing an alkylhydrazine of the formula
- H[N].sub.2 NNHCR.sup.1 R.sup.2 CHR.sup.3 R4
- which comprises reacting hydrazine and an alkene of the formula
- R.sup.1 R.sup.2 C.dbd.CR.sup.3 R.sup.4
- wherein
- R.sup.1 is (C.sub.1 -C.sub.4) alkyl;
- R.sup.2 is (C.sub.1 -C.sub.4) alkyl, (C.sub.2 -C.sub.4) alkenyl, (C.sub.2 -C.sub.4) alkynyl or phenyl;
- R.sup.3 is hydrogen, (C.sub.1 -C.sub.4) alkyl, (C.sub.2 -C.sub.4) alkenyl or (C.sub.2 -C.sub.4) alkynyl;
- or R.sup.1 and R.sup.2 together or R.sup.2 and R.sup.3 together respectively form a cycloalkyl group;
- and
- R.sup.4 is hydrogen, (C.sub.1 -C.sub.4) alkyl, (C.sub.2 -C.sub.4) alkenyl or (C.sub.2 -C.sub.4) alkynyl;
- in the presence of an acid catalyst.
8 more elements
Dependencies are inferred from the claim text.