A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 3301-94-8, Name is 6-Butyltetrahydro-2H-pyran-2-one, molecular formula is C9H16O2. In a Article，once mentioned of 3301-94-8, Safety of 6-Butyltetrahydro-2H-pyran-2-one
A high-yielding stereoselective method for forming spiroketals from simple ketoallylic diols is reported. Employing catalytic [PdCl2(MeCN) 2] in THF at 0 C, these dehydrative cyclization reactions require only mild conditions to produce vinyl-substituted spiroketals in high yields after brief reaction times with water as the only byproduct. Using this method, the stereochemical information embedded at the nucleophile is transmitted “down-the-chain” and efficiently sets the stereochemistry at both the anomeric carbon atom and the newly formed allylic stereocenter. Down-the-chain: Rapid, high-yielding dehydrative spiroketalization of ketoallylic diols is achieved by efficient catalysis with [PdCl 2(MeCN)2]. The reactions are highly selective for most substrates, with the chiral information of a single stereocenter being communicated, and cyclization occurring, in a “down-the-chain” fashion. Further stereochemical control can be gained by the incorporation of a chiral allylic alcohol (see scheme). Copyright
Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data.Safety of 6-Butyltetrahydro-2H-pyran-2-one, If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 3301-94-8, in my other articles.
Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics