3.3.3- trifluoro-2- propene

Conjugate addition reactions to enantiomerically pure tolylsulfinyl trifluoro-propene were used recently to prepare a-trifluoromethyl aldehydes [249]. Conjugate adducts were elaborated by Pummerer rearrangement of the sulfoxyl group to install the aldehydic carbonyl (Eq. 83). [Pg.164]

However, peroxides, UV or y radiation also allow these hydrosilylations and, interestingly, monoadduct and diadduct were produced from 1,1,1-trifluoro-propene [110] as follows ... [Pg.181]

Nitrone 1 reacts with the parent 3,3,3-trifluoropropenc and with various 3,3,3-trifluoro-propenes which arc substituted in the 1-position with another electron-withdrawing group (ester, nitro or sulfone). Regioselectivity depends on the LUMO coefficient of C2 which is larger for sulfones and nitro compounds. However, with 3,3,3-trifluoropropene the predominant formation of the 5-(trifluoromethyl)isoxazolidine is not explained by orbital coefficients, but by stcric hindrance. [Pg.542]

C1CH CHCF3 (chloro-trifluoro- propene)/HF 1,3,3,3- tetrafluoro- propene Cr203/carbon 400 C,Sel = 73.0% 12... [Pg.135]

Hydroformylation. A polymer-supported (R,5)-BINAPHOS complex 3 serves as catalyst for asymmetric hydroformylation of gaseous substrates (e.g., 3,3,3-trifluoro-propene) to afford branched aldehydes. [Pg.31]

The addition of enolate anions to (E)- and (Z)-3,3,3-trifluoro-l-[(4-methylphenyl)sulfinyl]-1 -propene has been investigated (E)- and (Z)-a,/(-unsaturated sulfoxides undergo addition in the opposite stereochemical sense3,4. In general, yields and product diastereoselection are high. When the -position of the double bond of the enolate is substituted then all four diastereomer-ic products result. [Pg.1041]

Scheme 8-38. Enantioselective hydrogenation of l,l,l-trifluoro-2-(acetoxy)-2-propene.

Of the many substituted and functionalized alkenes that have been combined with diazo dipoles to give A -pyrazolines or products derived from them (i.e., A -pyrazolines, pyrazoles, cyclopropanes), only a selection will be mentioned. These include ot-alkylidene-cycloalkanones (62), -flavanones, -thioflavanones, -chroma-nones, and thiochromanones (63,64) a-arylidene-indanones and -indolones (65) diarylideneacetones (66) l-benzopyran-2(77)-ones (coumarins) (67,68) 4-nitro-1,2-oxazoles (69) 2-alkylidene-2-cyanoacetates (70) dimethyl 2,3-dicyanofuma-rate (71) tetracyanoethylene (72) tetraethyl ethylenetetracarboxylate (72) 1,4-quinones (35,73-75) 2-X-l,l,l-trifluoro-2-propene [X = Br, (76), SPh, SOPh, S02Ph (77)] nitroalkenes (78) including sugar nitroalkenes (79) 1-diethoxyphos-phoryl-1-alkenyl-sulfoxides (80) methyl 2-(acetylamino)cinnamate and -acrylate... [Pg.549]

Propene 2-Bromozinc-3,3,3-trifluoro- ElOb,. 473 (Educt) C.3H2BrF5 Propane... [Pg.586]

Propene 1-(Bis-[lrifluoromethyl]-amino)-1-iodo-3.3,3-trifluoro-EI0b2. 103 (Fduct)... [Pg.612]

Propene 1 -F.thoxy-l-methoxy-trifluoro-2-lrifluoromethyl-E10b2. 179 (E -> OCH3)... [Pg.639]

Propene 1-Bromo-1-cupro-2-phenyl-3,3,.3-trifluoro- E10b,. 465 (stability)... [Pg.660]

Propene 1-(4-Nitro-phenyl)-3.3,3-trifluoro- E10b2, 96 (-HHal - > En)... [Pg.662]

Propene 3-Hydroxy-3-phcnyl-1.1,2-trifluoro- ElOa. 296 (F2C = CFC1 + RLi/Ar —CHO). ElOb,. 420 (R-CHO + En-SiR3)... [Pg.662]

Propane 1-Oxo-1-phenyl-2-tfiflnoro-methylthio- E10b2. 73 (Educt) Propene 2-Phenylsulfinyl-3.3.3-trifluoro- ElOb,. 524 (Educt) Thioearbatoyl Fluoride S-(2,2-... [Pg.662]

Propene l-(Pentafluoro-phenyl)-1.1.1 -trifluoro-2-trifluoromethyl-ElOh,. 442f. [Ar-CHO + (F,C)2C(SR)2]... [Pg.669]

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