Wang, Xiao-jun published the artcileRegioselective Synthesis of Unsymmetrical 3,5-Dialkyl-1-arylpyrazoles, Recommanded Product: 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, the publication is Organic Letters (2000), 2(20), 3107-3109, database is CAplus and MEDLINE.
3-Alkoxylmethyl-5-alkylpyrazoles undergo regioselective N-arylation with 4-fluoronitrobenzene in the presence of base to yield the corresponding 1-(4-nitro-phenyl)pyrazoles. Further elaboration of these intermediates furnishes a practical synthesis of unsym. 3,5-dialkyl-1-arylpyrazoles. A tentative explanation of the observed regioselectivities is provided.
Organic Letters published new progress about 27943-46-0. 27943-46-0 belongs to tetrahydropyran, auxiliary class Tetrahydropyran,Alkynyl,Ether, name is 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, and the molecular formula is C7H6Cl2, Recommanded Product: 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran.
Referemce:
https://en.wikipedia.org/wiki/Tetrahydropyran,
Tetrahydropyran – an overview | ScienceDirect Topics