Synthesis of Dibenzothiophene and 1,4-Dihydrodibenzothiophene Derivatives via Allylic Phosphonium Salt Initiated Domino Reactions
Two efficient synthetic protocols were developed for the synthesis of dibenzothiophene and 1,4-dihydrodibenzothiophene using thioaurones and allylic phosphonium salt. Mild reaction conditions, a one-pot procedure, and easily accessible starting materials make these protocols powerful tools for the synthesis of these compounds, which are often used in material and pharmaceutical sciences.
Li, Ke,Yu, Aimin,Meng, Xiangtai
supporting information
p. 1106 - 1109
(2018/02/23)
EXO- and endohormones. XXII1: Synthesis of methyl (2E,4Z)-2,4-decadienoate, the pheromone synergist of the bark beetle Pityogenes chalcographus
The synthesis of methyl (2E,4Z)-2,4-decadienoate was based on a C 4 + C6 scheme. The coupling reaction took place between the 1-hexanale and phosphonium salt of methyl 1-bromocrotonate in a Wittig condensation. Methyl (2E,4Z)-2,4-decadienoate is a minor component of the sex pheromone of the bark beetle Pityogenes chalcographus.
COMMUNICATION. Utilisation du Bromhydrate de Triphenylphosphine pour la Synthese de Sels d'Alkyltriphenylphosphonium
Alkyltriphenylphosphonium salts can be obtained with good yields from the condensation between alkyl chlorides and triphenylphosphonium bromide.
Hercouet, A.,Corre, M. Le
p. 111 - 114
(2007/10/02)
Synthesis of Alkenyl-Substituted Allenecarboxylates
The Wittig olefination of decanoyl chloride by using the phosphonium salt 1 in the presence of two equivalents of Et3N represents a one-step synthesis of the racemic form of the naturally occurring pheromone (-)-2 which contains an alkenyl-subs
Lang, Robert Werner,Kohl-Mines, Elisabeth,Hansen, Hans-Juergen
p. 2249 - 2253
(2007/10/02)
Prostaglandin derivatives of the Δ2,4-11-deoxy-PEG series
The present invention relates to novel prostaglandin derivatives of the formula I STR1 which are structurally related to the naturally occurring prostaglandins and in which R1 denotes (a) hydrogen or a straight-chain or branched, saturated or unsaturated aliphatic or cycloaliphatic hydrocarbon radical having up to ten carbon atoms or (b) a physiologically acceptable metal or NH4 ion or an ammonium ion which is derived from a primary, secondary or tertiary amine and R2 denotes a straight-chain, aliphatic hydrocarbon radical having up to six carbon atoms and to a process for their manufacture. The compounds of the invention are distinguished in particular by gastric acid secretion-inhibiting and ulcer-protective properties.
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(2008/06/13)
The synthesis of deuterium, carbon 14, and carrier free tritium labeled cannabinoids
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Pitt,Hobbs,Schran,et al.
p. 551 - 575
(2007/10/11)
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