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Showing 1-24 of 24 results for "178934" within Papers
Stéphanie Desvergnes et al.
Organic letters, 10(14), 2967-2970 (2008-06-24)
A general method to prepare a new class of carbohydrate-derived, enantiomerically pure polyhydroxypyrroline N-oxides from their alkoxy (protected) derivatives is presented. Boron trichloride is shown to cleave efficiently benzyl ethers and ketals without affecting the imine N-oxide functionality of nitrones.
S J Barbee et al.
American Industrial Hygiene Association journal, 56(1), 74-76 (1995-01-01)
The acute inhalation LC50 of oxalyl chloride was determined in rats following a one-hour exposure. Four groups of 10 animals per group were exposed to a concentration range of 462-2233 ppm. One set of six animals was exposed to a
Lei Zhang et al.
Journal of combinatorial chemistry, 8(3), 361-367 (2006-05-09)
A novel and efficient microwave-assisted, BCl(3) mediated coupling reaction to synthesize o-(hydroxyaryl)(aryl)methanone structures from phenols and acyl chlorides is described. This reaction was further incorporated into a two-step synthesis of biologically interesting xanthones.
Stephen Sproules et al.
Inorganic chemistry, 50(10), 4503-4514 (2011-04-19)
Sky-blue Tp*WOCl(2) has been synthesized from the high-yielding reaction of Tp*WO(2)Cl with boron trichloride in refluxing toluene. Dark-red Tp*WOI(2) was prepared via thermal decarbonylation followed by aerial oxidation of Tp*WI(CO)(3) in acetonitrile. From these precursors, an extensive series of mononuclear
Warwick J Belcher et al.
Dalton transactions (Cambridge, England : 2003), (12)(12), 1602-1614 (2008-03-13)
The reactions of boron halides with free base porphyrins under conditions where partial hydrolysis of the boron halides can occur give diboron porphyrin complexes containing BOB moieties in which each boron is bonded to two porphyrin nitrogen atoms. BF(3).OEt(2) with
Synthesis of highly electrically conductive and electrochemically stable porous boron-doped carbon microspheres
Bose, Anima B and Yang, et al.
SN Applied Sciences, 1, 1-8 (2019)
Dean Marković et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 16(20), 5969-5975 (2010-04-17)
The first ene reactions of SO(2) and unfunctionalized alkenes are reported. Calculations suggest that the endergonic ene reactions of SO(2) with alkenes can be used to generate beta,gamma-unsaturated sulfinyl and sulfonyl compounds. Indeed, in the presence of one equivalent of
C Matthäus et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 57(3), 521-534 (2001-04-13)
A method for expressing quantitatively the vibrational normal modes of a molecule in a basis set consisting of the normal vibrations (plus translations and rotations) of its constituent fragments is presented. The method is illustrated by describing the vibrational modes
A New Member of the BN-Phenanthrene Family: Understanding the Role of the B?N Bond Position
Abengo?zar, Alberto and Sucunza
The Journal of Organic Chemistry, 84, 7113-7122 (2019)
Guillaume Reinisch et al.
The journal of physical chemistry. A, 115(18), 4786-4797 (2011-04-16)
We report on a theoretical study of the gas-phase decomposition of boron trichloride in the presence of hydrogen radicals using ab initio energetic calculations coupled to TST, RRKM, and VTST-VRC kinetic calculations. In particular, we present an addition-elimination mechanism (BCl(3)
Hydroboration with boron halides and trialkylsilanes.
Soundararajan R and Matteson DS.
The Journal of Organic Chemistry, 55(8), 2274-2275 (1990)
Robert Winker et al.
International archives of occupational and environmental health, 81(4), 423-428 (2007-07-27)
To examine whether semiconductor workers exposed to complex mixtures of chemical waste show an increase in genotoxic effects, and, if so, whether occupational safety measures protect these workers. To assess chemical exposure in the workplace, air monitoring of boron trifluoride
Organometallic chemistry. 21. Silyl trifluoromethanesulfonate (triflate)-boron trichloride (tribromide) complexes.
Olah GA, et al.
Organometallics, 3(9), 1337-1340 (1984)
Bis (pinacolato) diboron.
Ishiyama T, et al.
Organometallic Syntheses, 77, 176-185 (2000)
Coördination compounds of boron trichloride; systems with methyl chloride and ethyl chloride.
D R MARTIN et al.
The Journal of physical chemistry, 50(5), 422-427 (1946-09-01)
Coordination compounds of boron trichloride; systems with the propyl chlorides.
D R MARTIN et al.
The Journal of physical and colloid chemistry, 51(2), 425-430 (1947-03-01)
K C Ting et al.
Journal of AOAC International, 81(1), 93-98 (1998-03-21)
2,4-Dichlorophenoxyacetic acid (2,4-D) residues in fresh produce is officially analyzed as its methyl ester form by gas chromatography with electron capture detection (GC-ECD). Because of safety concerns with diazomethane, the reagent used to form methyl esters, a less toxic and
Metal-Free Synthesis of Ynones from Acyl Chlorides and Potassium Alkynyltrifluoroborate Salts.
Taylor C and Bolshan Y.
Organic Letters, 16(2), 488-491 (2013)
Travis Lundrigan et al.
The Journal of organic chemistry, 78(2), 757-761 (2012-12-15)
A new method for the synthesis of Cl-BODIPYs from F-BODIPYs is reported, merely requiring treatment of the F-BODIPY with boron trichloride. Cl-BODIPYs are exploited as synthetic intermediates generated in situ for the overall conversion of F-BODIPYs to O- and C-BODIPYs
Lei Zhang et al.
Journal of combinatorial chemistry, 7(4), 622-626 (2005-07-12)
A novel and efficient microwave-assisted, BCl3-mediated coupling reaction to synthesize salicylamide structures from phenols and isocyanates is described.
Juan Xie et al.
Carbohydrate research, 340(3), 481-487 (2005-02-01)
Boron trichloride has been found to promote selective deprotection of 1,2- or 1,3-cis oriented secondary benzyl ethers of per-benzylated C-glycosyl derivatives. The reactivity towards BCl(3) follows the order: C-4>or=C-2>C-6>C-3 for C-glucopyranosyl derivatives and C-3>or=C-4>C-6>C-2 for C-galactopyranosyl derivatives. Preparatively useful selective
Jayaraman Selvakumar et al.
Organic & biomolecular chemistry, 8(18), 4056-4058 (2010-07-29)
Isoindoloisoquinalinone, pyrroloisoquinolinone and benzo[a]quinolizinone units are constructed via intramolecular cyclization of the methoxy substituted N-phenethylimides using BBr(3).
George W Kabalka et al.
The Journal of organic chemistry, 73(7), 2668-2673 (2008-03-06)
A boron trihalide mediated alkyne-aldehyde coupling reaction leading to stereodefined 1,3,5-triaryl-1,5-dihalo-1,4-pentadienes is described. The study led to the discovery of a direct substitution of hydroxyl groups by stereodefined alkenyl moieties using alkenylboron dihalides. During the investigation, it was also discovered
Xiaolei Wang et al.
Organic chemistry frontiers : an international journal of organic chemistry, 2(8), 978-984 (2015-09-04)
Sceptrins and nakamuric acid are structurally unique antibiotics isolated from marine sponges. Recent studies suggest that the biosynthesis of these dimeric pyrrole-imidazole alkaloids involves a single-electron transfer (SET)-promoted [2+2] cycloaddition to form their cyclobutane core skeletons. We describe herein the
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