Cyclopentanone CAS 120-92-3

1. Kuchokera ku cyclopentanone ndi n-valeraldehyde monga zopangira, amyl cyclopentanone imapangidwa ndi aldol condensation ndi dehydration, kenako chosankha catalytic hydrogenation chimachitidwa kuti apange amyl cyclopentanone. Amyl cyclopentanone ili ndi fungo lamphamvu la maluwa ndi zipatso komanso kukoma kwa jasmine, ndipo ingagwiritsidwe ntchito mu njira yopangira kukoma kwa mankhwala tsiku ndi tsiku, mlingo wake ukhoza kukhala wochepera 20%. IFRA ilibe zoletsa.

2. Hexylcyclopentanone imapangidwa kuchokera ku n-hexylaldehyde ndi cyclopentanone pogwiritsa ntchito condensation kenako selective hydrogenation. Hexylcyclopentanone ili ndi fungo lamphamvu la jasmine ndipo imaphatikizidwa ndi fungo la zipatso, ndipo ingagwiritsidwe ntchito mu zonunkhira ndi mitundu ina ya mankhwala tsiku ndi tsiku yokhala ndi mlingo mkati mwa 5%. IFRA ilibe zoletsa.

3. 1-pentene kapena 1-heptene yomwe imapezeka mwa kusweka kwa paraffin kapena kutaya madzi m'thupi molingana ndi mowa ngati zinthu zopangira, pamaso pa di-tert-butyl peroxide ngati choyambitsa, gulu lowonjezera laulere limayankha ndi cyclopentanone kuti lipange 2-amyl cyclopentanone (kapena 2-heptyl cyclopentanone), pambuyo pa okosijeni kukhala delta-decalactone (kapena delta-dodecalactone).

4. Njira yopangira ndi cyclopentanone ngati chinthu choyambira imakhala ndi phindu lalikulu kwambiri pakupanga zinthu m'mafakitale. Cyclopentanone poyamba imaphatikizidwa ndi n-valeraldehyde, ndipo Chemicalbook yomwe imachokera imaphwanyidwa madzi ndikusankhidwa kukhala hydrogenated kuti ipange 2-amylcyclopentanone, ndipo pamapeto pake imapanga delta-decalactone mwa kuwonjezera mphete ya oxidative.

5.delta-decanolactone imagwiritsidwa ntchito makamaka popanga zokometsera zakudya, komwe amakhulupirira kuti ili ndi kukoma kwapadera kwa kirimu wachilengedwe. Izi zisanachitike, kwa nthawi yayitali, opanga zonunkhira anali kungogwiritsa ntchito zonunkhira za monomer monga butanedione ndi vanillin ngati zinthu zazikulu zopangira kukoma kwa kirimu. Komabe, anthu nthawi zambiri amaona kuti kukoma kwa kirimu wosakaniza ndi kochepa kwambiri kuposa chinthu chachilengedwe pankhani ya kukoma kapena kukoma. Pambuyo pogwiritsa ntchito delta-decalactone, ndi pomwe pangakhale kukoma kwenikweni kwa kirimu, makamaka kuphatikiza kwa delta-decalactone ndi delta-dodecalactone ngati fungo lalikulu la zinthu zopangira, kukoma ndi zotsatira za kukoma kwa kirimu wokonzedwa zimakhala bwino.

6. Pogwiritsa ntchito cyclopentanone ndi valeraldehyde ngati zopangira, condensation kuti ipange 2-(1-hydroxyl) amyl cyclopentanone, reaction ndi dimethyl malonate, kenako hydrolysis pa 160 ~ 180℃, decarboxylated, esterification, dihydrojasmonate methyl ester ikhoza kukonzedwa. Methyl jasmonate dihydrojasmonate ndi kukoma kwakanthawi komwe kumaloledwa ndi GB2760-1996 mdziko lathu. Fungo lake ndi labwino kuposa methyl jasmonate yachilengedwe, ndipo makhalidwe ake ndi okhazikika.