171503-61-0Relevant academic research and scientific papers
Synthesis of Dialkyl-Substituted Monofluoroalkenes via Palladium-Catalyzed Cross-Coupling of Alkyl Carbagermatranes
Wang, Chao,Liu, Yu-Chao,Xu, Meng-Yu,Xiao, Bin
, p. 4593 - 4597 (2021)
An unprecedented cross-coupling reaction of alkyl carbagermatranes with bromofluoroolefins to deliver dialkyl-substituted monofluoroalkenes was achieved. This cross-coupling reaction was performed under base/additive-free conditions with excellent functio
Concise preparation of fluorine-containing carbocycles involving the Diels-Alder reaction using fluorinated alkene or diene derivatives
Yamada,Hondo,Konno,Ishihara
, p. 28458 - 28469 (2016/04/09)
The Diels-Alder reaction of trifluorovinyl substances with various dienes proceeded well to give the corresponding trifluorinated cyclohexene derivatives in a regiospecific manner, while 2,3-difluorobuta-1,3-diene molecules also underwent a smooth Diels-A
Reactions of carbonyl compounds with phosphorus ylide generated from tribromofluoromethane and tris(dimethylamino)phosphine
Hirai, Go,Nishizawa, Eri,Kakumoto, Daiki,Morita, Masaki,Okada, Mitsuaki,Hashizume, Daisuke,Nagashima, Sayoko,Sodeoka, Mikiko
supporting information, p. 1389 - 1391 (2015/11/17)
The reactions of fluorinated ylide, generated from tris(dimethylamino) phosphine and tribromofluoromethane, with simple aldehydes and reactive ketones gave the expected Wittig reaction products. However, a ketone having a galactose skeleton afforded an acid fluoride, probably through an unprecedented CoreyChaykovski- type epoxide formation reaction, followed by spontaneous Meinwald rearrangement.
Efficient synthesis of fluoroalkenes via diethylzinc-promoted wittig reaction
Zoute, Ludivine,Dutheuil, Guillaume,Quirion, Jean-Charles,Jubault, Philippe,Pannecoucke, Xavier
, p. 3409 - 3418 (2008/02/11)
The synthesis of α-fluoroacrylates and α-bromo-α- fluoroalkenes was achieved in very good yields using aldehydes and ketones, triphenylphosphine, diethylzinc as promoter, and ethyl dibromofluoroacetate or dibromofluoromethane, respectively. A change in th
A facile and mild method for the synthesis of terminal bromofluoroolefins via diethylzinc-promoted wittig reaction
Lei, Xinsheng,Dutheuil, Guillaume,Pannecoucke, Xavier,Quirion, Jean-Charles
, p. 2101 - 2104 (2007/10/03)
Synthesis of 1-bromo-1-fluoroolefins was achieved in good yields via a Wittig reaction promoted by diethylzinc, even with nonactivated aldehydes and ketones as starting materials.
Generation and carbonyl addition reactions of dibromofluoromethyllithium derived from tribromofluoromethane as applied to the stereoselective synthesis of fluoro olefins and 2-bromo-2-fluoro-1,3-alkanediols
Shimizu, Masaki,Yamada, Nobuko,Takebe, Yoko,Hata, Takeshi,Kuroboshi, Manabu,Hiyama, Tamejiro
, p. 2903 - 2921 (2007/10/03)
The treatment of tribromofluoromethane with BuLi in THF-Et2O (2: 1) at - 130°C generated dibromofluoromethyllithium, which was allowed to react smoothly with a coexisting aldehyde or ketone (RR'C=O) to give fluorinated alcohol RR'C(OH)CFBr2 (3) in good yield. Alcohol 3 was converted stereoselectively to (E)-1-bromo-1,2-difluoro olefin 5 via fluorination with Et2NSF3, followed by dehydrobromination with lithium 2,2,6,6- tetramethylpiperidide, while (E)-1-bromo-1-fluoro olefin was obtained with high selectivity by acetylation of 3, followed by reductive elimination using EtMgBr/(i-Pr)2NH. Difluoro olefin 5 underwent a cross-coupling reaction with an aryl, alkenyl, or alkynylmetal reagent to afford the corresponding fluoro olefin with retention of configuration. On the other hand, the treatment of RCH[OCH2O(CH2)2OCH3]CFBr2 with BuLi at -130°C in the presence of 4- heptanone gave the corresponding adduct diastereoselectively. The stereochemical outcome is explained in terms of chelation between lithium and oxygen atoms of the (2-methoxyethoxy)methyl group. Starting with 2- phenylpropanal, a product is obtained highly selectively containing three contiguous stereocenters including a -CFBr-moiety.
