1006-68-4Relevant articles and documents
Copper-mediated dehydrogenative biaryl coupling of naphthylamines and 1,3-azoles
Odani, Riko,Hirano, Koji,Satoh, Tetsuya,Miura, Masahiro
, p. 11045 - 11052 (2013)
A copper-mediated dehydrogenative biaryl cross-coupling of naphthylamines and 1,3-azoles has been developed. The key to its success is the introduction of N,N-bidentate coordination system based on the picolinamide directing group. The reaction proceeds s
A One-Pot Tandem Approach for the Synthesis of 5-(Het)aryloxazoles from Substituted (Het)aryl Methyl Alcohols and Benzyl Bromides
Vinay Kumar, Koravangala S.,Swaroop, Toreshettahally R.,Rajeev, Narasimhamurthy,Vinayaka, Ajjampura C.,Lingaraju, Gejjalagere S.,Rangappa, Kanchugarakoppal S.,Sadashiva, Maralinganadoddi P.
, p. 1363 - 1366 (2016)
A new modified van Leusen strategy has been developed for the synthesis of biologically significant 5-substituted oxazoles by the reaction of (het)aryl methyl alcohols or benzyl bromides as precursors with tosylmethylisocyanide (TosMIC) under basic conditions. This method is efficient, takes place under mild reaction conditions, and is tolerant of various functional groups with high yield.
Solution-phase parallel oxazole synthesis with TosMIC
Kulkarni, Bheemashankar A.,Ganesan
, p. 5637 - 5638 (1999)
A quaternary ammonium hydroxide ion exchange resin catalyzes the reaction of p-tolylsulfonylmethyl isocyanide (TosMIC) with aromatic aldehydes to give 5-aryloxazoles. The base and the p-tolylsulfinic acid byproduct are removed by simple filtration, result
Benzotriazol-1-ylmethyl isocyanide, a new synthon for CH-N=C transfer. Syntheses of α-hydroxyaldehydes, 4-ethoxy-2-oxazolines and oxazoles
Katritzky,Chen,Yannakopoulou,Lue
, p. 6657 - 6660 (1989)
Readily prepared benzotriazol-1-ylmethyl isocyanide (BetMIC) reacts under mild conditions with ketones and aldehydes, to afford oxazolines (convertible into α-hydroxyaldehydes) and oxazoles, respectively.
CONVERSION OF TRIAZOLIDES INTO OXAZOLES BY FLASH-VACUUM PYROLYSIS.
Maquestiau, A.,Puk, E.,Flammang, R.
, p. 4023 - 4024 (1986)
Flash-vacuum pyrolysis of azolides of 1,2,4-triazole affords 5-monosubstituted oxazoles.
Direct C-H iodination of 1,3-azoles catalysed by CuBr2
Zhao, Xia,Ding, Fang,Li, Jingyu,Lu, Kui,Lu, Xiaoyu,Wang, Bin,Yu, Peng
, p. 511 - 513 (2015)
A mild method was developed for the direct C-H iodination of 1,3-azoles catalysed by CuBr2. Compared with the traditional metalation/iodination sequences carried out with nBuLi or TMPLi (TMP = 2,2,6,6-tetramethylpiperidino), a relatively weaker base, LiOtBu, was used in the presence of 1,10-phenanthroline. Five series of 1,3-azoles, including benzoxazole, benzothiozole, N-methyl-benzoimidazole, 5-phenyloxazole and 2-phenyl-1,3,4-oxadiazole were tested and afforded the corresponding iodination products.
Synthesis and reactivities of 1-(isocyanomethyloxy)benzotriazole as a new source of isocyanomethyl synthon
Sasaki, Hideaki
, p. 1369 - 1371 (1997)
The title compound, 1-(isocyanomethyloxy)benzotriazole (6) as a new source of isocyanomethyl synthon, was synthesized in 65% yield by the dehydration of 1-(formamidomethyloxy)benzotriazole with phosphorus oxychloride in the presence of triethylamine. Unde
Nickel-catalyzed direct C-H arylation and alkenylation of heteroarenes with organosilicon reagents
Hachiya, Hitoshi,Hirano, Koji,Satoh, Tetsuya,Miura, Masahiro
, p. 2202 - 2205 (2010)
"Chemical Equation Presented" Breaking the Si-lence: The direct crosscoupling of heteroarenes with aryl- or alkenylsilanes proceeds efficiently, in the presence of a nickel catalyst, to create a wide range of aryl- and alkenyl-heteroaryl bonds efficiently (see scheme; DMAc= N.N-dimethylacetamide, bpy = 2,2′-bipyridine). This catalysis represents a new avenue for using organosilanes in the catalytic C-H functionalization chemistry.
Tandem cycloaddition-decarboxylation of α-keto acid and isocyanide under oxidant-free conditions towards monosubstituted oxazoles
Zhang, Ling-Juan,Xu, Mei-Chen,Liu, Jie,Zhang, Xian-Ming
, p. 73450 - 73453 (2016)
An efficient method, tandem [3 + 2] cycloaddition-decarboxylation of α-keto acid and isocyanide promoted by copper salt, has been developed. Under oxidant-free conditions, a series monosubstituted oxazoles have been constructed. Different from the traditional application of α-oxo acids as acyl surrogates, the elegant approach herein ingeniously avoids consuming excess oxidants.
A solid-phase equivalent of van Leusen's TosMIC, and its application in oxazole synthesis
Kulkarni, Bheemashankar A.,Ganesan
, p. 5633 - 5636 (1999)
Polystyrene-SH resin, prepared from Merrifield resin in two steps, was converted to polystyrene-SO2-CH2-NC in three steps. This resin functions as a solid-phase equivalent of p-tolylsulfonylmethyl isocyanide (TosMIC). Thus, reaction with aromatic aldehydes and tetrabutylammonium hydroxide as base yields 5-aryloxazoles.