scholarly journals Reaction of Lithium Diethylamide with an Alkyl Bromide and Alkyl Benzenesulfonate: Origins of Alkylation, Elimination, and Sulfonation

2010 ◽  
Vol 75 (24) ◽  
pp. 8392-8399 ◽  
Author(s):  
Lekha Gupta ◽  
Antonio Ramírez ◽  
David B. Collum
Keyword(s):  
Alkyl Bromide ◽  
Lithium Diethylamide

scholarly journals The Reaction of Spin–Orbit State-Selected Ca(PJ03) With CH3I, CH2I2, and SF6

1986 ◽  
Vol 6 (6) ◽  
pp. 391-402 ◽  
Author(s):  
Mark L. Campbell ◽  
Nick Furio ◽  
Paul J. Dagdigian
Keyword(s):  
Chemical Reactions ◽  
Cross Sections ◽  
Optical Pumping ◽  
Spin Orbit ◽  
Alkyl Bromide ◽  
The Individual ◽  
State Selection

Chemiluminescence cross sections for reaction of the individual spin–orbit states of metastable Ca(PJ03) with CH3I, CH2I2, and SF6 have been determined by the use of optical pumping state selection. This technique was also used to separate the chemiluminescence arising from the two excited metastable Ca 3P0 and 1D states. The spin–orbit dependence of the chemiluminescence pathway was found to be substantial for the CH3I and CH2I2 reactions and similar to that previously observed for halogen diatom and alkyl bromide reagents. By contrast, no spin–orbit effect was observed for Ca(3P0)+SF6. These results are discussed in terms of our previously presented model for the origin of spin–orbit effects in chemical reactions.

scholarly journals Spontaneous Regression of Palmar Warts after Suffering from Diffuse Contact Dermatitis against Alkyl Bromide

2021 ◽  
pp. 54-57
Author(s):  
Gyohei Egawa ◽  
Tetsuya Honda ◽  
Kenji Kabashima
Keyword(s):  
Contact Dermatitis ◽  
Spontaneous Regression ◽  
Squaric Acid ◽  
Alkyl Bromide ◽  
Verrucae Vulgaris ◽  
Systemic Contact Dermatitis ◽  
Dibutyl Ester

Contact immunotherapy with several sensitizing chemicals such as diphenylcyclopropenone (DPCP) or squaric acid dibutyl ester (SADBE) have been used for the treatment of recalcitrant or multiple warts. Here, we report a case of multiple verrucae vulgaris (VV) on the palm which spontaneously resolved after the development of systemic contact dermatitis against alkyl bromide. We considered that our case accidentally mimics contact immunotherapy against multiple VV. VV sometimes regress spontaneously, which may be triggered by accidental contact dermatitis, as shown in our case.

Atom Transfer Radical Polymerization of Methyl Methacrylate Initiated by Alkyl Bromide and 2-Pyridinecarbaldehyde Imine Copper(I) Complexes

1997 ◽  
Vol 30 (7) ◽  
pp. 2190-2193 ◽  
Author(s):  
David M. Haddleton ◽  
Christina B. Jasieczek ◽  
Michael J. Hannon ◽  
Andrew J. Shooter
Keyword(s):  
Methyl Methacrylate ◽  
Atom Transfer Radical Polymerization ◽  
Radical Polymerization ◽  
Atom Transfer ◽  
Alkyl Bromide

α-Functionalization of Tetrahydroisoquinolines with Activated Alkyl Bromide under Photoredox Catalysis

Heterocycles ◽  
2017 ◽  
Vol 95 (2) ◽  
pp. 738 ◽  
Author(s):  
Yoshitaka Hamashima ◽  
Takafumi Ide ◽  
Kazunori Shimizu ◽  
Yuji Kawato ◽  
Hiromichi Egami
Keyword(s):  
Photoredox Catalysis ◽  
Alkyl Bromide

scholarly journals The fate of copper catalysts in atom transfer radical chemistry

2019 ◽  
Vol 10 (12) ◽  
pp. 1460-1470 ◽  
Author(s):  
Timothy J. Zerk ◽  
Lawrence R. Gahan ◽  
Elizabeth H. Krenske ◽  
Paul V. Bernhardt
Keyword(s):  
Copper Catalysts ◽  
Atom Transfer ◽  
Alkyl Bromide ◽  
Radical Chemistry ◽  
Radical Polymerisation

The pathway of atom transfer radical polymerisation (ATRP) is influenced by the nature of the alkyl bromide initiator (RBr) to the extent that reactions between the radical R˙ and the original copper(i) catalyst can divert the reaction toward different products.

Synthesis, Functionalization and Reductive Degradation of Multibrominated Disulfide-containing Hyperbranched Polymers

2012 ◽  
Vol 65 (1) ◽  
pp. 28 ◽  
Author(s):  
Delia-Laura Popescu ◽  
Nicolay V. Tsarevsky
Keyword(s):  
Ethylene Oxide ◽  
Methyl Ether ◽  
Diethylene Glycol ◽  
Chain Transfer ◽  
Alkyl Bromide ◽  
Star Copolymers ◽  
Reductive Degradation ◽  
Reducing Environment ◽  
Fold Excess ◽  
Glycol Methyl Ether

Reductively degradable hyperbranched polymethacrylates with multiple peripheral alkyl bromide groups were synthesized by the azobis(2-isobutyronitrile)-initiated copolymerization of diethylene glycol methyl ether methacrylate or oligo(ethylene oxide) methyl ether methacrylate with the disulfide-containing crosslinker bis(2-methacryloyloxyethyl)disulfide (2.5–10.0 mol-% relative to the monomer) in the presence of carbon tetrabromide (10–40-fold excess relative to the radical initiator) as efficient chain transfer agent. The alkyl bromide groups initiated the atom-transfer radical polymerization of methyl methacrylate, and star copolymers with hyperbranched disulfide-containing cores were formed. Both the macroinitiators and the star copolymers derived from them were degraded in reducing environment.

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