Metathesis of cardanol over Ru catalysts supported on mesoporous molecular sieve SBA-15

Ethenolysis: A Green Catalytic Tool to Cleave Carbon–Carbon Double Bonds

“…It was shown that ethenolysis of the mono‐unsaturated cardanol was more difficult and not selective even with second‐generation ruthenium catalysts, but the reaction was triggered in the presence of 1,4‐cyclooctadiene, showing the beneficial effect of the presence of this diene during the ethenolysis process. It is worth noting that cardanol has also been efficiently degraded by ethenolysis using second‐generation ruthenium catalysts Ru2 and Ru4 b supported on mesoporous molecular sieve SBA‐15 …”

The chemistry of the carbon-transition metal double and triple bond: Annual survey covering the year 2014

“…oleyl alcohol (144) [469]; (3) methyl oleate self metathesis [470] and a survey of indenylidene catalysts for this process [471]; (5) glyceryl triolein self metathesis [472]; (6) self metathesis of oleic and linoleic acid [473]; (7) oleonitrile and ethylene [474]; (8) ethylenolysis of olive oil [475]; (9) palash oil self metathesis [476]; (10) jojoba oil self metathesis [477]; (12) metathesis of cardanol (145) with either ethylene or cis 1,4-diacetoxy-2-butene [478,479], and metathesis of ethylene with cashew nut shell extract [480]. Other examples of cross metatheses where one of the partners is simple and readily available include: (1) ethylene with 1,4-butadiene polymers (depolymerization) [481], and with trans 1,4-polyisoprene (also using 1-octene as well as ethylene) [482]; (2) [486], with an allylated pyrroloindoline system for norcardioazine A and B total synthesis [487], and with an allylated flavonoid derivative for total synthesis of poinsettifolin A [488]; (4) cis 3-hexene with an allyltetrahydroquinoline system for total synthesis of angustureine (including many examples of RCM to form six-membered ring α,β-unsaturated lactams) [489], and with a homoallylamine derivative for synthesis of tetraponerines [490]; (5) various 1-alkene derivatives and vinylated seven-membered ring aminosugars [491];…”

Synthesis of a tyrosinase inhibitor by consecutive ethenolysis and cross-metathesis of crude cashew nutshell liquid

“…Upon distillation or any other thermal treatment, anacardic acid is known to decarboxylate easily with formation of technical cashew nutshell liquid (tCNSL), which consists mainly of cardanol. Due to this industrial processing method, the main focus in research aiming at the chemical valorization and modification of CNSL is on cardanol-derived products [8–10]. These include aromatic amines as polymers [11–12], cardanol-based phosphates as modifiers for epoxy resins [13], cardanol grafted natural rubber as rubber plasticizers [14], amine-based surfactants [15] and phenol/cardanol-formaldehyde based adhesives [16].…”