61442-09-9Relevant articles and documents
Synthesis of the conjugated tetraene acid side chain of mycolactone e by Suzuki-Miyaura cross-coupling reaction of alkenyl boronates
Wang, Yuan,Dai, Wei-Min
supporting information, p. 323 - 330 (2014/01/23)
The conjugated tetraene acid side chain of mycolactone E has been synthesized by the cross-coupling reaction of a trisubstituted triene bromide with a trisubstituted alkenyl boronate catalyzed by Pd(OAc)2-Aphos-Y under mildly basic conditions [K3PO4·3H 2O, H2O, tetrahydrofuran (THF), 35 °C, 18 h]. The conjugated tetraene product was obtained in 85 % yield without geometrical isomer(s) under the catalytic conditions. These results demonstrated that the coupling of alkenyl halides with alkenyl boronates catalyzed by Pd(OAc) 2-Aphos-Y in combination with CuI-catalyzed regio- and stereoselective alkyne borylation offers an efficient synthetic tool for accessing conjugated polyene molecules. Gently united: Conjugate polyenes possessing trisubstituted double bond(s) are synthesized from trisubstituted alkenyl halides and trisubstituted boronates in high yields under the catalysis of the hemilabile P,O ligand Aphos-Y and Pd(OAc)2 in the presence of K3PO4·3H2O (3 equiv.) and H2O (18 equiv.) in tetrahydrofuran (THF) at 35°C. The product is free of geometric isomers. Copyright
Process for preparing beta-L-2'deoxy-thymidine
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Page 5, (2010/02/05)
The present invention relates to a new, essentially four-step process for preparing beta-L-2′-deoxy-thymidine starting from L-arabinose. The process according to the invention is particularly important for mass production of beta-L-2′-deoxy-thymidine.
(2-Alkyl-1,4-benzodioxan-2-yl)carboxylic acids as potential hypolipidemic agents
Salimbeni,Manghisi
, p. 489 - 492 (2007/10/02)
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