C 2 F 5 CHO的大气化学:与Cl原子和OH自由基反应,C 2 F 5 C(O)O 2 NO 2的红外光谱
摘要:
烟雾室/ FTIR技术用于测量k(Cl + C 2 F 5 CHO)=(1.96±0.28)×10 -12和k(OH + C 2 F 5 CHO)=(5.26±0.80)×10 -13 cm 3分子-1 s -1在700 Torr的N 2中或296±2 K的空气中。Cl在空气稀释剂中在NO存在下引发C 2 F 5 CHO的氧化,得到COF 2,CF 3 ONO 2和C 2 F 5 C(O)O 2 NO 2摩尔产率分别为180±19%,6.1±0.6%和1.0±0.3%。报告了C 2 F 5 C(O)O 2 NO 2的红外光谱。讨论了在大气中氟化醛C n F 2 n +1 CHO的降解潜力,以有助于观察到的氟化羧酸C n F 2 n +1 C(O)OH的环境负担。
Defluorinative [4 + 1] annulation of perfluoroalkyl <i>N</i>-mesylhydrazones with primary amines provides 5-fluoroalkyl 1,2,3-triazoles
作者:Yongquan Ning、Hongwei Wang、Paramasivam Sivaguru、Shuang Li、Giuseppe Zanoni、Steven P. Nolan、Xihe Bi
DOI:10.1039/d1gc02749b
日期:——
blocks. However, only a few synthetic routes to these compounds are currently available. Herein, we report on a novel method to access 5-fluoroalkyl 1,2,3-triazoles from easily prepared bench-stable perfluoroalkyl N-mesylhydrazone (PFHZ-Ms), a reagent that can transform amines to 5 fluoroalkyl 1,2,3-triazoles via defluorinative [4 + 1] annulation. The simple reaction protocol can be applied to a variety
Hydroxyalkylation of 4,5,6,7-tetrahydroindole with polyfluorocarbonyl compounds as a route to 2-substituted indoles
作者:Andrei L. Sigan、Dmitrii V. Gusev、Nikolai D. Chkanikov、Elena Yu. Shmidt、Andrei V. Ivanov、Al’bina I. Mihaleva
DOI:10.1016/j.tetlet.2011.07.071
日期:2011.9
hydroxyalkylation of 4,5,6,7-tetrahydroindole at position 2 using highly electrophilic polyfluorocarbonyl compounds was performed for the first time. Oxidation of the products thus formed leads to indoles having 2-hydroxypolyfluoroalkyl and polyfluoroacyl groups.
A novel synthesis of per(poly)fluoroalkyl aldehydes
作者:Chang-Ming Hu、Xiao-Qing Tang
DOI:10.1016/s0022-1139(00)80105-0
日期:1993.4
A novel synthesis of per(poly)fluoroalkyl aldehydes in high yield by the reaction ofper(poly)fluoroalkyliodides or bromides with dimethylformamide initiated by aPbBr2(catalyst)/Al bimetal redox system is described.
Hörner–Wadsworth–Emmons reagents 3 and ketones 2 with a perfluoroalkyl (Rf) moiety prepared in situ was proved to be significantly efficient and powerful methods for the construction of a wide variety of α,β-unsaturatedesters with Rf and R1 groups both at the β-position due to convenient avoidance of usually tedious as well as troublesome isolation steps of these ketones 2.
Asymmetric synthesis of quaternary α-fluoro-β-keto-amines via detrifluoroacetylative Mannich reactions
作者:Chen Xie、Yanling Dai、Haibo Mei、Jianlin Han、Vadim A. Soloshonok、Yi Pan
DOI:10.1039/c5cc02256h
日期:——
Asymmetric detrifluoroacetylative Mannich reactions of N-sulfinyl-imines via C–C bond cleavage were explored, which provide access to C–F quaternary α-fluoro-β-keto-amines.