2807-29-6

Upstream product

• 96372-28-0 ethyl 3-oxo-2-triphenylphosphoranylidenenon-4-ynoate 
• 629-05-0 n-octyne 
• 100-52-7 benzaldehyde 

Downstream Products

• 1558-80-1 octadeca-9,11,13-triynoic acid 
• 14269-14-8 1,3,5-tri(hexane-1-one-1-yl)benzene 
• 2475-10-7 1-phenyl-2,4-nonadiyn-1-one 
• 1380540-10-2 C₂₅H₂₂F₄N₂O₂ 
• 1380540-09-9 C₂₅H₂₂ClF₃N₂O₂ 
• 1621074-40-5 (E)-2-(3-phenylprop-2-yn-1-ylidene)-N-tosyloct-3-ynamide 
• 1187443-00-0 (E)-N-benzyl-2-hydroxyoctadeca-9-en-11,13-diynamide 

Relevant academic research and scientific papers

Synthesis of enynones from alkynes, alkynyl ketones and aromatic aldehydes using the TiCl4/Et3N reagent system

Alkynyltitanium species, prepared in situ from alk-1-ynes using the TiCl4/Et3N reagent system, react with aromatic aldehydes to give enynones 2 in 49-38% yields. Reaction of alkynyl aryl ketones with aromatic aldehydes and the TiCls

Flash Vacuum Pyrolysis of Stabilised Phosphorous Ylides. Part 4. Stepwise Construction of Terminal 1,3-Diynes, Conjugated Diacetylenic Esters and a Triacetylenic Ester

Thirteen examples of stabilised alkynol ylides 6 have been prepared and are found, upon flash vacuum pyrolysis (FVP) at 500 deg C, to undergo extrusion of Ph3PO to give the diacetylenic esters 7 in moderate yield.At 750 deg C the same ylides afforded terminal 1,3-diynes 8 although often in poor yield.For R = 2-MeSC6H4 both 7 and 8 undergo secondary loss of Me* and cyclisation to give 2-alkynylbenzothiophene derivatives 9 and 10 in low yield.The first example of an alkadiynol ylide 11 has been prepared and is converted by FVP at 500 deg C into the triacetylenic ester 12.