41527-01-9Relevant articles and documents
A 2 - substituted oxazoline or 2 - substituted piperazine synthetic method (by machine translation)
-
Paragraph 0043; 0044; 0049, (2017/08/25)
The invention discloses a method for synthesizing 2 - substituted oxazoline or 2 - substituted oxazine new method, by nitrile and amino ethanol or 3 - amino - 1 - propanol as raw material, in the absence of solvent, can be used for the recycling of the sulfur to induce synthesis of 2 - substituted oxazoline and 2 - substituted piperazine. The method of the invention has low cost, simple reaction process, mild reaction conditions, the reaction time is short, the yield and the like, is suitable for the industrial generation. (by machine translation)
A general and efficient palladium-catalyzed carbonylative synthesis of 2-aryloxazolines and 2-aryloxazines from aryl bromides
Wu, Xiao-Feng,Neumann, Helfried,Neumann, Stephan,Beller, Matthias
, p. 13619 - 13623 (2013/01/15)
Oxazoline is OK! A general and efficient method for the synthesis of oxazolines has been developed (see scheme). This allowed the preparation of 27 five-membered-ring heterocycles and 11 six-membered-ring heterocycles in moderate to good yields. Copyright
Ultrasound promoted selective synthesis of 2-aryl-5,6-dihydro-4H-1,3-oxazines catalyzed by K-10 and KSF montmorillonite clays: A practical procedure under mild and solvent-free conditions
Mohammadpoor-Baltork, Iraj,Moghadam, Majid,Tangestaninejad, Shahram,Mirkhani, Valiollah,Eskandari, Zohre
experimental part, p. 857 - 862 (2011/10/09)
Montmorillonite K-10 and KSF were found to be highly efficient, environmentally friendly and recyclable heterogeneous catalysts for the selective synthesis of a variety of 2-aryl-5,6-dihydro-4H-1,3-oxazines from arylnitriles and 3-amino-1-propanol under ultrasound irradiation. This new methodology provides excellent yields in short reaction times (10-25 min). The reaction work-up is very simple and the catalysts can be easily separated from the reaction mixture and reused several times in subsequent reactions. This catalytic system also exhibits excellent chemoselectivity in the synthesis of mono-oxazines from dinitriles.