82891-85-8Relevant academic research and scientific papers
Microwave-Assisted Synthesis of 2-Aryl-2-oxazolines, 5,6-Dihydro-4H-1,3-oxazines, and 4,5,6,7-Tetrahydro-1,3-oxazepines
Mollo, María C.,Orelli, Liliana R.
, p. 6116 - 6119 (2016/12/09)
The first general procedure for the synthesis of 5- to 7-membered cyclic iminoethers by microwave-assisted cyclization of ω-amido alcohols promoted by polyphosphoric acid (PPA) esters is presented. 2-Aryl-2-oxazolines and 5,6-dihydro-4H-1,3-oxazines were efficiently prepared using ethyl polyphosphate/CHCl3. Trimethylsilyl polyphosphate in solvent-free conditions allowed for the synthesis of hitherto-unreported 4,5,6,7-tetrahydro-1,3-oxazepines. The method involves good to excellent yields and short reaction times.The reaction mechanism and the role of PPA esters were investigated in a chiral substrate.
Willgerodt–Kindler reaction-driven one pot solventless entry to 2-oxazolines
Bansal, Shivani,Gupta, Poonam,Halve
, p. 971 - 974 (2016/07/06)
We report an efficient and green protocol for the synthesis of 2-oxazolines by the reaction of aromatic nitriles with β-aminoalcohols using sulfur under solvent-free conditions. The reaction occurs via the Willgerodt-Kindler mechanism followed by transami
A mild and efficient synthesis of 2-oxazolines via transamidation- cyclodehydrosulfurisation of thioamides with 2-aminoethanol
Goud, D. Raghavender,Pathak, Uma
, p. 3678 - 3682 (2013/02/22)
Transamidation of thioamides with 2-aminoethanol, followed by cyclodehydrosulfurisation of the resultant N-(β-hydroxyethyl)thioamides, has been utilised for the mild and efficient synthesis of 2-oxazolines. The developed protocol was found to be of general applicability. Georg Thieme Verlag KG Stuttgart · New York.
Oxazolines. 3. Regioselective Synthesis of 2-(Monosubstituted phenyl) and/or Unsymmetrically 2-(Disubstituted phenyl) 2-Oxazolines by Cross-Coupling Grignard Reagents to (Haloaryl)-2-oxazolines
Pridgen, Lendon N.
, p. 4319 - 4323 (2007/10/02)
2-(Monosubstituted phenyl) 2-oxazoline 5 (R = H) and unsymmetrically 2-(disubstituted phenyl) 2-oxazolines 5 have been prepared by cross-coupling alkyl and aryl Grignard reagents to 2-(mono- and dihalogenated phenyl) 2-oxazolines 2 and 3 (X = halogen), re
