Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Catalysis Science & Technology called Atom-economical regioselective Ni-catalyzed hydroborylative cyclization of enynes: development and mechanism, Author is Cabrera-Lobera, Natalia; Quiros, M. Teresa; Bunuel, Elena; Cardenas, Diego J., which mentions a compound: 16400-32-1, SMILESS is CCC#CCBr, Molecular C5H7Br, HPLC of Formula: 16400-32-1.
We report a full study on the novel regioselective Ni-catalyzed hydroborylative cyclization of enynes using HBpin as the borylation agent. Alkyl and alkenyl boronates can be obtained depending on the substituent on the alkyne. The reaction takes place under smooth conditions with an inexpensive catalytic Ni-based system, constituting a fully atom-economic eco-friendly method. This process shows a broad scope, allowing the formation of carbo- and heterocycles in moderate to good yields. The utility of the resulting boronates is also illustrated. We have studied the reaction mechanism both exptl. and computationally. The process involves initial oxidative cyclometalation to Ni(0)(xantphos) species followed by the key C-B bond formation through σ-bond metathesis and reductive elimination.
From this literature《Atom-economical regioselective Ni-catalyzed hydroborylative cyclization of enynes: development and mechanism》,we know some information about this compound(16400-32-1)HPLC of Formula: 16400-32-1, but this is not all information, there are many literatures related to this compound(16400-32-1).
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics