A hexagonal ring arrangement found in benzene and other aromatic compounds, consisting of six carbon atoms with alternating single and double bonds between them, and with each carbon atom bonded to a hydrogen atom, or to other atoms or groups of atoms in derivatives of benzene. ...
With two O, S or NR groups and two CC double bonds in a ring, the systems are not aromatic, and there is no reason to expect them to be planar. In fact, the simple systems are little known, and, except for 1,4-dithiin, it is necessary to look for data from fairly heavily sub...
Adsorption of benzene on H-ZSM-5 leads, at low coverages, mainly to formation of 1:1 adducts with the zeolite bridging hydroxyl groups (3612cm 1 ). As a result, the O–H modes are shifted to two discrete bands with maxima at ca. 3350 and 3250cm 1 . The appearance of two bands ...
1,4-DIACETYLBENZENE, with the chemical formula C10H10O2 and CAS registry number 1009-61-6, is a compound known for its aromatic properties. This colorless liquid, also referred to as p-Diacetylbenzene, is characterized by its two acetyl functional groups attached to a benzene ring. It is ...
We focused our in situ refining strategy studies initially on the overall transformation of the Csp2–Csp3/Csp2–O bonds by using 1-(4-methoxyphenyl)-1-propanol (1a) as the model compound because of its lignin-mimetic phenylpropanol structure [(CH3O)Ph-Csp3(OH)–] with only one methoxy...
Especially for ruthenapyridine 1a′ and osmapyridine 1c′, both of them are much more stable than their nonaromatic 2a′ and 2c′ by fixing the N-Cl bond with the value of 1.78 Å (the N-Cl bond length in 2a) because 2a′ and 2c′ always rearranged to 1a′ and 1c′ by ...
The CH activation of benzene leads to an intermediate that involves OH and C6H5 groups as ligands. After forming this intermediate, the reaction has a junction that leads to two possible pathways, depending on the concentration of N2O. The recombination between the OH and C6H5 ligands, which...
The terminal and lateral phenolic -OH groups were esterified, one by one, with 4- n -alkoxybenzoyl and acetyl group, respectively. All the twelve homologues synthesized exhibit mesomorphism. The methoxy to n -decyloxy and n -hexadecyloxy derivatives exhibit monotropic nematic mesophase whereas, n...
This is interpreted as a weakening effect of coordinated ammonia on the Brnsted acidity of surface hydroxy groups. The adsorption of benzene also causes a perturbation of the spectrum of coordinated ammonia, revealing a direct interaction between these two adsorbates. 展开 ...
The key intermediate in the side-chain alkylation mechanism distinguished from the paring mechanism is the simultaneous formation of polymethylbenzene containing with the ethyl, propyl, or other alkyl groups. Haw et al. (95) studied co-reaction of 13C-methanol and 12C-ethylbenzene and 12C-cumene...