Die kernmagnetischen resonanzspektren substituierter trans-stilbene

Mechanical activation of trans-stilbene during wet grinding

“…The singlet peak (s) at 7.10 ppm in the 1 Table 2. The presented 1 H nuclear magnetic resonance spectra and the derived coupling constants of the feed material are in excellent agreement with literature data [56,57].…”

Microwave assistant synthesis of trans-4-nitrostilbene derivatives in solvent free condition

“…The solid product was filtered and dried. The structure of trans-4-nitrostilbenes was consistent with their spectral data in references [7,16]. …”

“…The conventional syntheses of such derivatives through transition-metal-catalyzed cross-coupling and Mizoroki-Heck reactions or Wittig-type reactions usually need complicated multi-steps and suffer from byproducts [7][8][9][10][11][12][13]. Several papers have been published for the synthesis of stilbene derivatives under microwave.…”

Design and synthesis of a zero-photoelastic birefringence polymer with a high glass-transition temperature by a random copolymerization method

“…17,18 Trans-4-hydroxystilbene A 1-l round-bottomed flask was charged with a mixture of 4-hydroxybenzaldehyde (122 g, 1 mol), phenylacetic acid (184 g, 1.35 mol) and piperidine (400 ml), and the mixture was refluxed for 6 h. The mixture was then cooled and poured onto crushed ice. The mixture was acidified to pH E5 with concentrated hydrochloric acid diluted to 1:6 (v/v) with water to dissolve the piperidine, and the suspended product was intensively stirred to break up larger particles.…”