Le, Anh published the artcileSelectivity between an Alder-ene reaction and a [2+2] cycloaddition in the intramolecular reactions of allene-tethered arynes, Recommanded Product: 2-((2-Methylbut-3-yn-2-yl)oxy)tetrahydro-2H-pyran, the publication is Organic Chemistry Frontiers (2021), 8(13), 3390-3397, database is CAplus.
Substituent-dependent reactivity and selectivity in the intramol. reactions of arynes tethered with an allene were described. With a 1,3-disubstituted allene moiety, an Alder-ene reaction of an allenic C-H bond was preferred over a [2+2] cycloaddition, whereas a [2+2] cycloaddition of the terminal π-bond of the allene was preferred with a 1,1-disubstituted allene. With a 1,1,3-trisubstituted allene-tethered aryne, an Alder-ene reaction with an allylic C-H bond was preferred over a [2+2] cycloaddition
Organic Chemistry Frontiers 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 C10H16O2, 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