Free Radical Additions Involving Fluorine Compounds. V. Reactions of 1,2-Dibromo-2-chloro- and 1,2-Dichloro-2-iodo-1,1,2-trifluoroethane with Fluoroölefins<sup>1</sup>

Tarrant, Paul; Lilyquist, M. R.

doi:10.1021/ja01618a063

Cited by 27 publications

(7 citation statements)

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“…The telomerization of vinylidene fluoride has been extensively investigated [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. Perfluoroalkyl iodides or a,v-diiodoperfluoroalkanes act as efficient chain transfer agents (CTA), since they easily undergo CF 2 -I bond cleavage [5,6,9,11,12,14,15,[20][21][22] leading to low molecular weight molecules.…”

Section: Introductionmentioning

confidence: 99%

Fluorinated cotelomers based on vinylidene fluoride (VDF) and hexafluoropropene (HFP): Synthesis, dehydrofluorination and grafting by amine containing an aromatic ring

Taguet

Sauguet

Améduri

et al. 2007

Journal of Fluorine Chemistry

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Section: Introductionmentioning

confidence: 99%

Fluorinated cotelomers based on vinylidene fluoride (VDF) and hexafluoropropene (HFP): Synthesis, dehydrofluorination and grafting by amine containing an aromatic ring

Taguet

Sauguet

Améduri

et al. 2007

Journal of Fluorine Chemistry

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“…Dehydrobromination of 3,4-dibromo-1,1,2-trichlorobut-1-ene (52), which is the product of bromine addition to the accessible 1,1,2-trichlorobuta-1,3diene (53), 48 affords a mixture of 3-(54, the main product) and 4-bromo-1,1,2-trichlorobuta-1,3-dienes (55, the by-product). 26 Two convenient methods have been developed for the synthesis of 1-bromo-1,4,4-trichlorobuta-1,3-diene (56). The first method consists in dehydrohalogenation of 1,2-dibromo-1,3,4,4tetrachlorobutanes (57) in the presence of PTC.…”

Section: A Dihalogenobutadienesmentioning

confidence: 99%

“…Dehalogenation of 4-bromo -1,2,3-trichloro-3,4,4-trifluoro-(71) and 1,3,4-trichloro-1,3,4,4-tetrafluorobut-1-ene (72) (see Table 1) yielded 3,4-dichloro-1,1,2-trifluorobuta-1,3-diene ( 73) and 4-chloro-1,1,2,4-tetrafluorobuta-1,3-diene (74), 56 respectively.…”

Section: A Dihalogenobutadienesmentioning

confidence: 99%

Synthesis and reactions of mixed halogenobuta-1,3-dienes

Kaberdin¹,

Поткин²,

Zapol’skii³

1999

Russ. Chem. Rev.

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The N = 2 and N = 3 series of the 1 P c doubly excited helium states are investigated by a partial-wave analysis, and by inspecting the one-body densities and the shape-densities. Many features in the anisotxopism of the electronic cloud, in the geometric configuration, and in the details of radial-radial correlation are found. A comparison between the x P e and 3 P S states is made. I. IntroductionThe investigation of electron-electron (e-e) correlation is a basic task of atomic physics. Since helium is the simplest atom with e-e correlation, it deserves to be investigated in detail. In our recent papers^1-4 !, the 1 S", 3 S e 1 P°, 3 P° and 3 P e doubly excited helium states have been explored in detail. The present one is a continuation of previous paper dedicated to the 1 P e states. The interest, just as before, is not in the quantitative aspect, but in the qualitative features of the structures. The same procedure as in Ref.[1] is used to diagonalize the Hamiltonian in a model space to obtain the eigenenergies E{ and the eigenwavefunctions $,-. Only the results of N = 2 and N = 3 series (N labels the shell of the inner electron) are reported in the following.Let us first list some features arising from the symmetry inherent in the 1 P e states: i) Let /,-be the orbital angular momentum of the i-th electron (e,), then we have ^ = / 2 ^ 0. ii) In the (K,T) A classification scheme' 5 ' 6 !, T is now an exact quantum number (in general it is mostly not exact) and T = 1. iii) Let L be the total orbital angular momentum, and M its Z-component. In the following discussions, we fix M = \L\; it implies that we have L essentially lying along the Z-axis. Under this prescription, the probability of both electrons staying in the XY plane is zero. The above three points are common in both the 1 P e and 3 P" states, but different from the odd parity i '+ 1 p° states. In the later, the electrons prefer lying in the XY plane, iv) In the (K, T) A scheme, A is now an exact quantum number (in general it is mostly not exact) and A = "-". v) The probability of both electrons having the same distance apart from the nucleus (i.e., r*i = r 2 ) is zero. The above points iv) and v) are in contrary to the 3 P e states. The later has A -"+", and r\ = r 2 is available. The proof of the above features is referred to Ref. [8], these features are helpful in understanding the following results. II. Energy Spectrum and the Weights of Partial Wave ChannelThe first column of Table 1 gives the n (/-ir,T)jv notation to specify the states, N (n) is the shell where the inner (outer) electron stays. It is evident that K = 0 is in the N = 2 series, and K = ±1 in the N = 3 series. The second column gives the energies calculated in this work to be compared with those in the fourth column by Lipsky^, two sets of energies are in general one-to-one close to each other. The third column gives e,-defined in Ref.[2] to roughly 'The project supported by National Natural Science Foundation of China.

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“…Studies of the addition of various reagents to 1alkoxy-1,3-butadienes have demonstrated a marked tendency for these dienes to undergo 1,4 additions.1 6 The selectivity and stereoselectivity of the addition of hydrogen to ¿rans-1-methoxy-l,3-butadiene could give needed information on the relations between cis-trans isomerization, selectivity of hydrogen addition, and double-bond migration for 1,3-diene systems. 7 We have studied the addition of hydrogen to trans-1methoxy-1,3-butadiene in the liquid phase over platinum oxide (Adams catalyst), Raney nickel, Lindlar catalyst, and nickel-boron catalyst with the greatest emphasis on studies with platinum oxide.…”

mentioning

confidence: 99%

“…írons-1-Methoxy-l,3-butadiene 58.5 44.1 21.5 7.3 3.9 0.0 0.0 " The % reaction is based on the pressure drop for 2 moles of hydrogen per mole of diene. 6 The indication P means the compound was present; no percentage composition was recorded.…”

mentioning

confidence: 99%

Catalytic hydrogenation of trans-1-methoxy-1,3-butadiene

Bell¹,

Garrett²,

Jones³

et al. 1967

J. Org. Chem.

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Free Radical Additions Involving Fluorine Compounds. V. Reactions of 1,2-Dibromo-2-chloro- and 1,2-Dichloro-2-iodo-1,1,2-trifluoroethane with Fluoroölefins¹

Cited by 27 publications

References 0 publications

Fluorinated cotelomers based on vinylidene fluoride (VDF) and hexafluoropropene (HFP): Synthesis, dehydrofluorination and grafting by amine containing an aromatic ring

Fluorinated cotelomers based on vinylidene fluoride (VDF) and hexafluoropropene (HFP): Synthesis, dehydrofluorination and grafting by amine containing an aromatic ring

Synthesis and reactions of mixed halogenobuta-1,3-dienes

Catalytic hydrogenation of trans-1-methoxy-1,3-butadiene

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Free Radical Additions Involving Fluorine Compounds. V. Reactions of 1,2-Dibromo-2-chloro- and 1,2-Dichloro-2-iodo-1,1,2-trifluoroethane with Fluoroölefins1

Cited by 27 publications

References 0 publications

Fluorinated cotelomers based on vinylidene fluoride (VDF) and hexafluoropropene (HFP): Synthesis, dehydrofluorination and grafting by amine containing an aromatic ring

Fluorinated cotelomers based on vinylidene fluoride (VDF) and hexafluoropropene (HFP): Synthesis, dehydrofluorination and grafting by amine containing an aromatic ring

Synthesis and reactions of mixed halogenobuta-1,3-dienes

Catalytic hydrogenation of trans-1-methoxy-1,3-butadiene

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Free Radical Additions Involving Fluorine Compounds. V. Reactions of 1,2-Dibromo-2-chloro- and 1,2-Dichloro-2-iodo-1,1,2-trifluoroethane with Fluoroölefins¹