Abstract:
The present invention generally relates to methods of inhibiting ethylene responses in plants and plant materials, and particularly relates to methods of inhibiting various ethylene responses including plant maturation and degradation, by exposing plants to cyclopropene derivatives and compositions thereof wherein: 1) at least one substituent on the cyclopropene ring contains a carbocyclic or heterocyclic ring, or 2) a substituent contains silicon, sulfur, phosphorous, or boron, or 3) least one substituent contains from one to four non-hydrogen atoms and at least one substituent contains more than four non-hydrogen atoms.
Abstract:
The process is provided for forming the reaction product comprising the homologue mixture of I(CF 2 ) n I, wherein n is 3 to 7, which may contain at least one of the contaminants ICF 2 I and I(CF 2 ) 2 I, by the steps comprising (a) reacting iodine with hexafluoropropylene oxide at a temperature of 150°C to 210°C in a reactor, the amount of said hexafluoro- propylene oxide being a portion of the total amount of hexafluoropropylene oxide to be reacted with said iodine, thereby forming a reaction product containing gaseous perfluoroacetyl fluoride as a reaction by-product, (b) cooling said reaction product to become liquid except for said gaseous perfluoroacetyl fluoride, (c) venting said perfluoroacetyl fluoride from said reactor, and (d) repeating said steps (a), (b), and (c) until said total amount of said HFPO is reacted with said iodine.
Abstract:
The invention relates to a process for the manufacture of a-iodoperfluoroalkanes and α,ω-diiodoperfluoroalkanes of general formula: (l) A(C 2 F 4 ) n l, wherein: A is selected from F, CF 3 and I and n is an integer equal to or higher than 1, with the proviso that, when A is F, n is an integer higher than 1 said process comprising heating a mixture [mixture (M1)] containing: - a compound selected from I 2 , CF 3 I, CF 3 CF 2 I and C 2 F 4 I 2 ; - TFE; - and CO 2 at definite temperatures and concentrations of CO 2 .
Abstract:
Disclosed is a process for the synthesis of 1,3,3,3-tetrafluoropropene which comprises, in one embodiment, reacting a compound of CF3X1 with a compound of CX2H=CHX3, wherein X1, X2, and X3 are each independently selected from the group consisting of fluorine, chlorine, bromine and iodine, to produce a reaction product comprising a compound of CF3CH=CHX3, wherein X3 is as described above; and when X3 is not fluorine, fluorinating the compound to produce 1,3,3,3-tetrafluoropropene. The process in another embodiment comprises preparing tetrafluoropropene comprising thermally cracking one or more compounds capable of producing a reaction mixture which preferably comprises diflurocarbene radicals and vinylidene fluoride, and converting said reaction mixture into -tetrafluoropropene (1,3,3,3-tetrafluoropropene).
Abstract:
Halogenated compounds are prepared by ring opening reactions of highly fluorinated cyclopropanes with chlorine, bromine, iodine, or mixtures thereof at temperatures over 100 DEG C. A novel compound, which is one type of compound produced, is a highly fluorinated and halogenated ether and other novel compounds are starting materials or products. The products of the process are useful as chain transfer agents for certain free radical polymerizations, and as chemical intermediates in the preparation of various products such as surfactants and textile surface treatments.
Abstract:
The invention discloses a method for preparation of fluoro, chloro and fluorochloro alkylated compounds by homogeneous Pd catalyzed fluoro, chloro and fluorochloro alkylation with fluoro, chloro and fluorochloroalkyl halides in the presence of di(1-adamantyl)-n-butylphosphine and in the presence of 2,2,6,6-tetramethylpiperidine 1-oxyl.