401901-61-9

Upstream product

• 5390-04-5 pent-1-yn-5-ol 
• 705-31-7 4-trifluoromethylphenylacetylene 
• 107-02-8 acrolein 
• 455-13-0 4-Iodobenzotrifluoride 

Downstream Products

• 1187791-58-7 2-(4-trifluoromethylphenyl)cyclopent-2-enone 
• 1443989-44-3 (E)-6-(4-trifluoromethylbenzylidene)-1methyloctahydropyrrolo[1,2-a]pyrimidine 
• 861921-00-8 1-phenyl-7-(4-trifluoromethyl-phenyl)-hepta-1,6-diyn-3-one 

Relevant academic research and scientific papers

Palladium-catalyzed 1,4-addition of terminal alkynes to acrolein

Abstract A Pd(OAc)2-PMe3 catalyzed 1,4-addition of terminal alkynes to acrolein has been developed with an environmentally conscious methodology on water. The reaction conditions were optimized to favor 1,4-addition over acrolein polymerization. The scope of the reaction was explored as well as its performance in acetone. A wide variety of 4-alkynals were obtained in moderate to good yields, thus showing the versatility of this reaction.

A new synthesis of bicyclic N,O- and N,S-enaminals by the anionic cyclization of alk-4-ynals with amino alcohols and amino thiols

A reaction of alk-4-ynals with aliphatic amino alcohols or 2-aminoethanethiol in the system DMSO - KOH gives bicyclic N,O- and N,S-enaminals: 6-methylidenehexahydro-2H-pyrrolo[2,1-b][1,3]oxazines, 5-methylidenehexahydropyrrolo[2,1-b]oxazoles, or 5-methyl-

Synthesis of 6-(arylmethylidene)octahydropyrrolo[1,2-a]pyrimidines and 5-(arylmethylidene)hexahydropyrrolo[1,2-a]imidazoles by the interaction of alk-4-ynals with a,?-diaminoalkanes in DMSO in the presence of KOH

Cyclization of alk-4-ynals with a,?-diaminoalkanes in DMSO under the action of KOH affords bicyclic N,N-enaminals - 6-(aryl- methylidene)octahydro[1,2-a] pyrimidines and 5-(arylmethylidene)hexahydro[1,2-a]imidazoles.

Synthesis of bicyclic N,N-enaminals by cyclization of alk-4-ynals with aliphatic diamines in DMSO upon treatment with KOH

A cyclization of alk-4-ynals with aliphatic diamines in DMSO upon treatment with KOH was found to lead to bicyclic N,N-enaminals. The studies of this reaction showed that 1,3-diaminopropane and N-methyl-1,3-diaminopropane gave (E)-6-(arylmethylidene)octahydropyrrolo[1,2-a]pyrimidines in 45 - 78% yields, whereas 1,2-diaminoethane gave 5-(arylmethylidene)hexahydropyrrolo[1,2-a] imidazoles as mixtures of E- and Z-isomers in up to 75% total yield. The mechanism of these new cascade cyclization reactions includes formation of the equilibrium mixtures of imines and cyclic aminals with subsequent intramolecular hydroamination of the triple bond having considerable ionic character.

The Photo-Dehydro-Diels-Alder (PDDA) reaction - A powerful method for the preparation of biaryls

The photochemically initiated dehydro-Diels-Alder (PDDA) reaction is an efficient and versatile method for the preparation of biaryls. The ring closure may take place both inter- and intramolecularly, of which the intramolecular variant is more productive

The photo-dehydro-diels-alder reaction: An efficient route to naphthalenes

The photo-dehydro-Diels-Alder reaction (PDDA), a new photochemical route to naphthalenes is presented. The [4+2] cycloaddition takes place between 3-arylynones and arylacetylenes. in which these moieties may be located in two molecules (intermolecular PDD

Rhodium-catalyzed regio- and enantioselective intermolecular [4+2] carbocyclization of 4-alkynals with N,N-dialkyl acrylamides

(Chemical Equation Presented) Selective rings: A cationic Rh I-(R,R)-walphos complex catalyzes a highly regio-and enantioselective intermolecular [4+2] carbocyclization of 4-alkynals with N,N-dialkyl acrylamides to afford enantioenriched cyclohexanones (see scheme; cod = cycloocta-1,5-diene). This new route is attractive in view of the one-step access to 4-alkynals from commercially available reagents.