γ-Cyclodextrin mediated photo-heterodimerization between cinnamic acids and coumarins
The ability of γ-cyclodextrin to form ternary inclusion complexes has been utilized to mediate photo-heterodimerization between cinnamic acids and coumarins in the solid-state. Stabilizing steric and electronic interactions between the alkenes in the incl
Clements, Aspen Rae,Pattabiraman, Mahesh
p. 1 - 7
(2015/02/19)
Large molecular motions are tolerated in crystals of diamine double salt of trans-chlorocinnamic acids with trans-1,2-diaminocyclohexane
(Chemical Equation Presented) Contrary to the general assumption that photoreactions in crystals may not proceed with large molecular motions, a pedal-like motion prompted by electronic excitation is believed to be involved during the β-dimer formation from the crystals of the diamine double salt of trans-2,4-dichlorocinnamic acid and trans-1,2-diaminocyclohexane.
Natarajan, Arunkumar,Mague, Joel T.,Venkatesan,Ramamurthy
p. 1895 - 1898
(2007/10/03)
Control of the Solid-state photodimerization of some derivatives and analogs of transcinnamic acid by ethylenediamine
Some of double salts derived from ethylenediamine (en) and a variety of trans-cinnamic acids and their analogs underwent photodimerization in the solid state, giving predominantly β-truxinic dimers. X-Ray studies demonstrate that (a) the conformation of en is gauche for the highly photoreactive double salts (o-1b·en and m-le·en), whereas it is anti for lessphotoreactive o-la·en or photoinert Id·en and (b) for highly reactive o-lb·en and m-le·en, the monomer acid molecules are arranged in an overlap configuration and a reactive monomer pair is hydrogendashbonded to the same en molecule.
Ito, Yoshikatsu,Borecka, Bozena,Olovsson, Gunnar,Trotter, James,Scheffer, John R.
p. 6087 - 6090
(2007/10/02)
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