Fuji, Koji et al. published their research in Chemical Communications (Cambridge, United Kingdom) in 2005 | CAS: 40365-61-5

2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran (cas: 40365-61-5) belongs to tetrahydropyran derivatives. Tetrahydropyran is a useful synthetic intermediate. Tetrahydropyranyl (THP-) ethers derived from the reaction of alcohols and dihydropyran are common intermediates in organic synthesis. Pyran derivatives such as pyran flavonoids are biologically important. Monosaccharides containing six-membered rings are called pyranose.Quality Control of 2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran

Rh(I)-catalyzed CO gas-free cyclohydrocarbonylation of alkynes with formaldehyde to 伪,尾-butenolides was written by Fuji, Koji;Morimoto, Tsumoru;Tsutsumi, Ken;Kakiuchi, Kiyomi. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2005.Quality Control of 2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran This article mentions the following:

The rhodium(I)-catalyzed reaction of alkynes R1C顚咰R2 (R1 = n-Pr, Ph, 4-NCC6H4; R2 = Me, n-Pr, Ph, 4-MeOC6H4, 2-furyl, HO(CH2)3, etc.) with formaldehyde proceeds via the double incorporation of a carbonyl moiety from formaldehyde, resulting in a CO gas-free cyclohydrocarbonylation leading to 伪,尾-butenolides I. In the experiment, the researchers used many compounds, for example, 2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran (cas: 40365-61-5Quality Control of 2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran).

2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran (cas: 40365-61-5) belongs to tetrahydropyran derivatives. Tetrahydropyran is a useful synthetic intermediate. Tetrahydropyranyl (THP-) ethers derived from the reaction of alcohols and dihydropyran are common intermediates in organic synthesis. Pyran derivatives such as pyran flavonoids are biologically important. Monosaccharides containing six-membered rings are called pyranose.Quality Control of 2-(But-3-yn-1-yloxy)tetrahydro-2H-pyran

Referemce:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics