When the R' substituent was an aryl unit, the a,b-double bond in the four- membered ring could easily migrate to the b,g-carbons. Placing a substituent (such as a CH3 or Cl unit) at the a-carbon of 1 led to nearly no reaction, and the ketone substrate was recovered under the ...
units derived from a compound comprising a ketone functionality and at least two fused rings, A and B wherein ring A is a saturated ring or ring system having 5 to 7 cyclic carbons and substituted with a ketone functionality and ring B is a saturated ring having 5 to 6 cyclic carbonsdoi...
Ketones with primary and tertiary α-carbons. b Ketones with secondary and tertiary α-carbons. c Ketones with primary and secondary α-carbons. Ketone 1 (0.3 mmol), allylic alcohol 2a (0.1 mmol). Using iPrOH as solvent. Full size image Next, we studied the ketones with secondary...
Two novel poly (aryl ether ketone)s with anthracene moieties in the backbone were synthesized through the conventional nucleophilic aromatic substitution polycondensation for the first time, by using a new bisfluoro monomer, 9,10-bis(4-fluorobenzoyl) anthracene (AnBF). The structures of obtained pol...
18–20 Selective oxidation of terminal carbons in 4-hydroxy-1-alkenes (18) gave the five-membered hemiacetals (19), which can be converted to γ-butyrolactones by PCC oxidation (Scheme 4).96 Formation of a tricyclic sixmembered hemiacetal (62%) from a 5-hydroxy-1-alkene system was used...
MCTs can have different carbon lengths and this can slightly dictate how ketogenic they are; MCTs with 8 carbons (C8) are 3 times more ketogenic than a 10-carbon MCT and about 6 times more ketogenic than a 12-carbon MCT.9 Coconut oil is a rich source of MCTs, but these precursors can...
used rGO to increase the performance of PEEK-derived microporous carbons [100]. Although microporous carbon has good surface area, they also possess low conductivity and mechanical stability. Hence, rGO was used as a binder and filler to rectify these. The 2-layer composite film increased ...
What alkene would give only a ketone with three carbons as a product of oxidative cleavage? How will you use a Grignard addition reaction to prepare the given alcohol from an aldehyde or ketone? Deduce the IUPAC name of the alkyne. Show how 1-pentanol can be prepared from an alkene. Show...
The novel process for preparation of the diarylmethanol 3 comprises reacting an N-carboxyanhydride 2 with an aryl Grignard reagent: ##STR9## wherein n is 1 or 2; R1and R2independently represent hydrogen, C1-3 alkyl or joined together represent with the carbons to which they are attached a...
(ether ketone)s functionalized with carboxylic acid terminal groups Ying Shi1, Yuta Nabae1, Teruaki Hayakawa1, Hirokazu Kobayashi2, Mizuho Yabushita2,3, Atsushi Fukuoka2 and Masa-aki Kakimoto1 A new type of hyperbranched aromatic poly(ether ketone) terminated with carboxylic acid groups (P2) was...