N-methyl-2,2,2-trifluoroacetamide CAS:815-06-5

Ko te N-Ethyl 2-methyl-4,4,4-trifluoroacetoacetate (EMTFA) e tohuhia ana e tōna hanganga ngota, kei roto ko te rōpū trifluoromethyl (-CF3) e piri ana ki te tuara β-keto ester. Ka whakawhiwhia e tēnei hanganga te pumau me te tauhohenga nui ki te EMTFA, kia pai ai mō te whānuitanga o ngā tono matū. Ko te EMTFA he wai mārama, kore tae me te ira kohua tata ki te 140°C, ā, e whakaatu ana i te wairewa pai i roto i ngā whakarewa waro noa pēnei i te acetone me te ethyl acetate. Nā tōna pumau i raro i ngā āhuatanga rerekē ka taea te whakamahi whai hua i roto i ngā rangahau taiwhanga me ngā tukanga ahumahi. Ngā Whakamahinga Hanganga Waro: Ko te EMTFA he poraka hanga nui i roto i te hanga waro, inā koa i roto i te whakaurunga o ngā tohu trifluoromethylated ki roto i ngā ngota waro. He mea nui tēnei āheinga mō te whakawhanake i ngā rongoā, ngā matū ahuwhenua, me ngā matū motuhake me te kaha koiora me te pumau matū kua whakarei ake. Matū Rongoā: I roto i ngā tono rongoā, ka whakamahia te EMTFA hei matū mua i roto i te hanga o ngā kai rongoā hohe (API) nā tōna kaha ki te whakarato i ngā āhuatanga rongoā e hiahiatia ana. He mahi nui tāna i roto i te matū rongoā mā te whakahohe i te whakarerekētanga o ngā ngota rongoā hei whakarei ake i te whai huatanga me te whakaiti i te ngoikore o te pākia. Ngā Matū Motuhake: Ka kitea te whakamahinga o te EMTFA i roto i te hanga matū motuhake pēnei i ngā patu taru, ngā patu pepeke, me ngā takawaenga matatini e whakamahia ana i roto i te hanganga o ngā matū ahuwhenua me ngā matū pai. Nā tōna whānuitanga ki ngā huringa matū ka whai hua i roto i ngā whakatakotoranga e hiahiatia ana te mana whakahaere tika mō te hanganga me te mahi ngota. Te Hanganga Ka hangaia te Ethyl 2-methyl-4,4,4-trifluoroacetoacetate mā te tukanga maha-taahiraa e tīmata ana me te tauhohenga whakapūmau Claisen o te ethyl trifluoroacetate me te methyl acetate, ā, muri iho ko te esterification i raro i ngā tikanga whakahaere. Ko te tikanga ka puta te tauhohenga i te aroaro o te whakakorikori turanga hei whakahaere i te hanganga β-keto ester. Ka whakamahia ngā tikanga purenga pēnei i te distillation, te recrystallization rānei hei whiwhi i te EMTFA i roto i te parakore teitei e tika ana mō ngā tono ahumahi. Ko te huarahi hanga māmā me te wātea o ngā rauemi tīmatanga ka whai wāhi ki tōna whai huatanga utu me te whakamahinga whānui i roto i te rangahau mātauranga me ngā tukanga ahumahi. Hei whakarāpopototanga, he matū maha ngā whakamahinga o te ethyl 2-methyl-4,4,4-trifluoroacetoacetate, ā, he nui ngā whakamahinga i roto i te hanga matū waro, te matū rongoā, me te hanga matū motuhake. Nā ōna āhuatanga matū ahurei, tae atu ki te pumau, te tauhohenga, me te ngāwari o te hanga, ka waiho hei kaitākaro matua ki te whakatairanga i ngā hangarau puta noa i ngā rāngai ahumahi me ngā kaupapa pūtaiao.