90134-47-7

Upstream product

• 90134-46-6 5-[(tert-butyldimethylsilyl)oxy]pent-2-yn-1-ol 
• 98-59-9 p-toluenesulfonyl chloride 
• 18162-48-6 tert-butyldimethylsilyl chloride 
• 78592-82-2 4-(tert-butyldimethylsilyloxy)-1-butyne 

Relevant academic research and scientific papers

Trail-following in termites: Stereoselective syntheses of (Z)-3-Dodecen- 1-OL, (3Z,6Z)-3,6-Dodecadien-1-OL and (3Z,6Z,8E)-3,6,8-dodecatrien-1-OL

(Z)-3-Dodecen-1-ol (4), a candidate trail-following semiochemical for several termite species, was synthetized by (Z)-stereoselective reduction of 3-dodecyn-1-ol (8). (3Z,6Z)-3,6-Dodecadien-1-ol (6), which is a structural analogue of 4, was prepared by a reaction sequence in which the key step was the cross-coupling between 5-(tert-butyldimethylsilyloxy)-2-pentyn-1-yl p- toluene-sulfonate (11) and 1-heptyne (12), in the presence of Cul, NaI and K2CO3. Finally, (3Z,6Z,8EZ)-3,6,8-dodecatrien-1-ol (3), which is a non- species-specific trail-following pheromone of termites, was prepared by a convergent synthesis in which compound 11 and (E)-3-hepten-1-yne (18) were used as key intermediates.

Rhodium-catalyzed hydroformylation of 1,1-disubstituted allenes employing the self-assembling 6-DPPon system

Abstract A rhodium-catalyzed hydroformylation of 1,1-disubstituted allenes is reported. Using a RhI/6-DPPon catalyst system, one can obtain β,γ-unsaturated aldehydes in high regio- and chemoselectivity. The Z-configured product is formed with up to >95% selectivity when unsymmetrically 1,1-disubstituted allenes are submitted to the reaction conditions. This is the first time that these interesting building blocks are accessible by hydroformylation of allenes. The utility of this methodology is demonstrated by further transformations of one of the obtained products. β,γ-Unsaturated aldehydes are obtained by a rhodium-catalyzed hydroformylation of 1,1-disubstituted allenes. For unsymmetrically 1,1-disubstituted allenes the Z-configured product is formed in up to about 95% selectivity. This is the first time that these building blocks are accessible by hydroformylation of allenes. The utility of this methodology is demonstrated by further transformations of one of the obtained products.

NOVEL TARGETING AGENTS FOR DIAGNOSTIC AND THERAPEUTIC INDICATIONS

The invention relates to compounds and use thereof in the diagnosis and/or in treatment of medical disorders. In some embodiments, the compounds may be used for detecting a cancer. The compound may include a di-acid moiety. In some embodiments the di-acid moiety comprises a di-carboxylic acid and in some embodiments the di- acid moiety comprises a di-tetrazole.

Synthesis of Z,Z-Skipped Diene Macrolide Pheromones for Cryptolestes and Oryzaephilus Grain Beetles (Coleoptera Cucujidae)

Three macrolide aggregation pheromones for Cryptolestes pusillus, Cryptolestes turcicus, and Oryzaephilus mercator were synthesized stereoselectively from acyclic precursors.The first, 13-methyl-(5Z,8Z)-tridecadienolide (I), is an aggregation pheromone for C. turcicus and had been tentatively identified previously in Phoracantha synonyma.The second, 11-methyl-(3Z,6Z)-undecadienolide (II), is an aggregation pheromone for O. mercator.The third, (3Z,6Z)-dodecadienolide (III) is an aggregation pheromone for O. mercator and is also slightly attractive to C. pusillus.The racemic and enantiomeric forms of I were synthesized.