Способ получения 2-метил-1,4-нафтохинона
Patents
Language: |
Русский |
Type: |
Invention |
Number |
SU 1121255 A1 |
Request number: |
3582772/23-04 |
Request date: |
Apr 22, 1983 |
patent.field.start_date: |
|
Registration date: |
Oct 30, 1984 |
patent.field.request_publication_date: |
|
Authors |
Городецкая Т.А.
,
Кожевников И.В.
,
Матвеев К.И.
|
Affiliations |
1 |
Boreskov Institute of Catalysis SB RAS
|
|
2-Methyl-1,4-naphthoquinone (I) is prepd. by oxidn. of 2-methylnaphthalene (II) at an elevated temp. with O in the presence of a V-contg. catalyst. The I yield is increased by using 0.02-0.2 mol/L phosphomolybdovanadium heteropoly acid H3+nPMo12-nVnO40 (n = 2, 4, 6) as the V-contg. catalyst in 2-10:1 II-heteropoly acid molar ratio at 120-140° and 3-8 atm O pressure, in 50-90 vol.% org. HOAc contg. 0.2-0.8 mol/L H2SO4.