Xiao, Wenbo et al. published their research in Chemical Communications (Cambridge, United Kingdom) in 2012 | CAS: 13417-49-7

5,6-Dihydro-2H-pyran-3-carbaldehyde (cas: 13417-49-7) belongs to tetrahydropyran derivatives. Tetrahydropyrans are also used as important solvents, as chemical intermediate and as monomer for ring-opening polymerization. The bismuth chloride-assisted cross-cyclization between homoallylic alcohols and epoxides provided various benzyl tetrahydropyran derivatives. The reaction afforded good yields of desired products and occurred under mild conditions.Synthetic Route of C6H8O2

Ruthenium(IV) porphyrin catalyzed phosphoramidation of aldehydes with phosphoryl azides as a nitrene source was written by Xiao, Wenbo;Zhou, Cong-Ying;Che, Chi-Ming. And the article was included in Chemical Communications (Cambridge, United Kingdom) in 2012.Synthetic Route of C6H8O2 This article mentions the following:

[RuIV(por)Cl2] (por = porphyrin dianion) can efficiently catalyze nitrene insertion into aldehyde C-H bonds with phosphoryl azides as a nitrene source to give N-acylphosphoramidates in good to high yields. Thus, treating 4-methylbenzaldehyde with 1.5 equiv of diphenylphosphoryl azide (DPPA) in the presence of 5 mol% [RuIV(TPP)Cl2] (TPP = meso-tetrakis(4-tolyl)porphyrin) in dichloroethane under inert atm. reflux conditions yielded the corresponding di-Ph (4-methylbenzoyl)phosphoramidite (2a) in 92% yield and with 100% substrate conversion. No reaction was observed in the absence of the ruthenium catalyst. The structure of 2a was determined by x-ray crystallog. In the experiment, the researchers used many compounds, for example, 5,6-Dihydro-2H-pyran-3-carbaldehyde (cas: 13417-49-7Synthetic Route of C6H8O2).

5,6-Dihydro-2H-pyran-3-carbaldehyde (cas: 13417-49-7) belongs to tetrahydropyran derivatives. Tetrahydropyrans are also used as important solvents, as chemical intermediate and as monomer for ring-opening polymerization. The bismuth chloride-assisted cross-cyclization between homoallylic alcohols and epoxides provided various benzyl tetrahydropyran derivatives. The reaction afforded good yields of desired products and occurred under mild conditions.Synthetic Route of C6H8O2

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