Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 16400-32-1, is researched, SMILESS is CCC#CCBr, Molecular C5H7BrJournal, Advanced Synthesis & Catalysis called Metal-Free, Base-Promoted, Tandem Pericyclic Reaction: A One-Pot Approach for Cycloheptane-Annelated Chromones from γ-Alkynyl-1,3-Diketones, Author is Liang, Yi-En; Kan, Chih-Yu; Barve, Balaji D.; Kuo, Yao-Haur; Fang, Hsu-Wei; Li, Wen-Tai, the main research direction is cycloheptachromone preparation; alkynyl diketone methoxyphenyl preparation intramol pericyclization.Computed Properties of C5H7Br.
A microwave-assisted, base-promoted tandem cyclization reaction strategy has been developed for the synthesis of cyclohepta[b]chromones I (R1 = H, Me, MeO, Cl, Ph, 4-MeOC6H4; R2 = H, Me, MeO; R3 = H; R2R3 = CH:CHCH:CH; R4 = H, Me, Et; R5 = H; R6 = H, Me, n-Pr, cyclopropyl, n-hexyl) and spiro cyclohepta[b]chromones I [R1 = H, Cl, Me, 4-MeC6H4O; R2 = H, Me, MeO; R3 = H; R4R5 = (CH2)3, (CH2)4, (CH2)5; R6 = H, Me]. Readily accessible γ-alkynyl-1,3-diketones II (X = MeO, Cl, Br, I) underwent intramol. cyclization and 7-endo-trig carbocyclization to afford various cycloheptane-annelated chromones I in one-pot reactions. This metal-free protocol also led to the generation of polycyclic ring with a new C-C bond and a new C-O bond.
Although many compounds look similar to this compound(16400-32-1)Computed Properties of C5H7Br, numerous studies have shown that this compound(SMILES:CCC#CCBr), has unique advantages. If you want to know more about similar compounds, you can read my other articles.
Reference:
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics