Cyclopentanone CAS 120-92-3

1. Mai ka cyclopentanone a me ka n-valeraldehyde e like me nā mea maka, hoʻokumu ʻia ka amyl cyclopentanone e ka aldol condensation a me ka dehydration, a laila hana ʻia ka hydrogenation catalytic koho e hana i ka amyl cyclopentanone. Loaʻa i ka Amyl cyclopentanone ka ʻala puaʻa a me ka huaʻala a me ka ʻono jasmine, a hiki ke hoʻohana ʻia i kēlā me kēia lā i ke ʻano kemika, hiki ke emi ma lalo o 20%. ʻAʻohe palena o IFRA.

2. Hoʻomākaukau ʻia ka Hexylcyclopentanone mai n-hexylaldehyde a me cyclopentanone e ka condensation a laila koho i ka hydrogenation. He ʻala jasmine ikaika ʻo Hexylcyclopentanone a hele pū ʻia me ka ʻala hua, a hiki ke hoʻohana ʻia i ka ʻala a me nā mea ʻala ʻē aʻe i kēlā me kēia lā me ka dosage i loko o 5%. ʻAʻohe palena o IFRA.

3. ʻO 1-pentene a i ʻole 1-heptene i loaʻa ma ka paraffin cracking a i ʻole ka hoʻoheheʻe ʻana i ka waiʻona e like me nā mea maka, i mua o ka di-tert-butyl peroxide ma ke ʻano he mea hoʻomaka, ʻo ka hoʻohui hui manuahi me ka cyclopentanone e hana i ka 2-amyl cyclopentanone (a i ʻole 2-heptyl cyclopentanone), ma hope o ka oxidation e lilo i delta-decalactone (a i ʻole delta-dodecalactone).

4. ʻO ke ala synthesis me ka cyclopentanone ka mea hoʻomaka ka waiwai nui o ka hana ʻoihana. Hoʻopili mua ʻia ʻo Cyclopentanone me ka n-valeraldehyde, a ua hoʻoheheʻe ʻia ka Chemicalbook i ka hopena a koho i ka hydrogenated e hana i ka 2-amylcyclopentanone, a hope loa e hana i ka delta-decalactone e ka hoʻonui ʻana i ke apo oxidative.

Hoʻohana nui ʻia ʻo 5.delta-decanolactone i nā ʻano meaʻai meaʻai, kahi i manaʻoʻiʻo ʻia ai ka ʻono ʻano o ka holika maoli. Ma mua o kēia, no ka manawa lōʻihi, ua kaupalena ʻia nā mea ʻala i ka hoʻohana ʻana i nā mea ʻala monomer e like me butanedione a me vanillin ma ke ʻano he kumu nui no ka hoʻomākaukau ʻana i ka ʻono ʻaila. Eia nō naʻe, manaʻo ka poʻe he haʻahaʻa loa ka ʻono ʻaila i hui ʻia ma mua o ka huahana maoli ma ke ʻano o ka ʻono a i ʻole ka ʻono. Ma hope wale nō o ka hoʻohana ʻana i ka delta-decalactone, hiki ke loaʻa kahi ʻono maoli o ka ʻaila, ʻoi aku ka maikaʻi o ka hui pū ʻana o delta-decalactone a me delta-dodecalactone ma ke ʻano he mea ʻala nui, ʻoi aku ka maikaʻi o ka ʻono a me ka hopena o ka ʻono holika.

6. hoʻohana i ka cyclopentanone a me ka valeraldehyde e like me nā mea maka, condensation e hana i ka 2- (1-hydroxyl) amyl cyclopentanone, pane me ka dimethyl malonate, a laila hydrolysis ma 160 ~ 180 ℃, decarboxylated, esterification, dihydrojasmonate methyl ester hiki ke hoʻomākaukau. ʻO ka Methyl jasmonate dihydrojasmonate kahi meaʻai hiki ke ʻai ʻia e GB2760-1996 i ko mākou ʻāina. ʻOi aku ka maikaʻi o kona ʻala ma mua o ka methyl jasmonate maoli, a paʻa kona mau waiwai.