In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Palladium-catalyzed desymmetric [2+2+2] cycloaddition of 1,6-enyne and alkyne, published in 2021-01-22, which mentions a compound: 16400-32-1, mainly applied to fused tricyclic hydronaphthofuran hydronaphthopyrrole preparation stereoselective; internal alkyne enyne desym cycloaddition palladium catalyst, Name: 1-Bromo-2-pentyne.
A novel and straightforward palladium-catalyzed desym. [2+2+2] cycloaddition reaction of alkyne-tethered cyclohexadienone and internal alkyne is established. Widely existing fused tricyclic hydronaphthofuran and hydronaphthopyrrole frameworks are prepared diastereoselectively in moderate to excellent yields. One-step aromatization process provides a new and facile access to important benzene-containing tricycles from above cycloaddition products.
In addition to the literature in the link below, there is a lot of literature about this compound(1-Bromo-2-pentyne)Name: 1-Bromo-2-pentyne, illustrating the importance and wide applicability of this compound(16400-32-1).
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics