p-Nitrobenzyl Trichloroacetimidate

Clegg, William; Pogue, H. J.; Lowe, Mark P.; Butterfield, I. M.; Jackson, Richard F. W.

doi:10.1107/s0108270194010838

Cited by 4 publications

(3 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…NMR spectra were recorded in CDCl 3 , with residual chloroform or TMS used as the internal reference. The trichloroacetimidates 1 , 25 3 , 26 11 , 27 17 , 15e 21 , 15e 25 , 28 27 , 29 29 , 30 37 , 15e 45 , 17 47 , 11b,31 and 49 32 were prepared as previously described, while tert -butyl 2,2,2-trichloroacetimidate 43 and ethyl 2,2,2-trichloroacetimidate 51 were purchased from commercial sources and used without further purification. The synthesis and analysis of the enantiopurity of the chiral trichloroacetimidate ( S )-3 was performed as previously reported.…”

Section: Methodsmentioning

confidence: 99%

Rearrangement of Benzylic Trichloroacetimidates to Benzylic Trichloroacetamides

et al. 2017

View full text Add to dashboard Cite

The rearrangement of allylic trichloroacetimidates is a well-known transformation, but the corresponding rearrangement of benzylic trichloroacetimidates has not been explored as a method for the synthesis of benzylic amines. Conditions that provide the trichloroacetamide product from a benzylic trichloroacetimidate in high yield have been developed. Methods were also investigated to transform the trichloroacetamide product directly into the corresponding amine, carbamate and urea. A cationic mechanism for the rearrangement is implicated by the available data.

show abstract

Section: Methodsmentioning

confidence: 99%

Rearrangement of Benzylic Trichloroacetimidates to Benzylic Trichloroacetamides

et al. 2017

View full text Add to dashboard Cite

show abstract

“…The phase transition of samples was observed by polarizing optical microscope (POM) and small-angle X-ray scattering (SAXS). 40 Using scanning electron microscopy (SEM), the uneven distribution of pitch can be confirmed, and the formation mechanism of the broadband reflection can be affirmed.…”

mentioning

confidence: 96%

Preparation of Liquid Crystal Film Capable of Shielding Visible Light Band by Two‐Phase Coexistence

Zhang

Cao

et al. 2020

Journal of Polymer Science

View full text Add to dashboard Cite

A broadband reflective film covering the visible region is prepared by twice crosslinking polymerization of active monomer at different temperatures. The system is transformed from cholesteric phase to twist grain boundary A phase with the decrease of temperature. Based on the temperature dependence of pitch in two‐phase coexistence system, the polymer networks formed by free‐radical polymerization fix a part of small pitch when the system is in cholesteric phase at high temperatures, and then the large pitch is fixed by cationic polymerization when system is in twist grain boundary A phase at low temperatures. The non‐uniform distribution of pitch is formed in the system so that the reflection band of the film is broadened. © 2020 Wiley Periodicals, Inc. J. Polym. Sci. 2020, 58, 599–606

show abstract

“…When equivalent amounts of benzene were used in the reactions, only low yields (10-30%) of diarylmethanes 7 were obtained. This problem was solved with excess amounts of benzene [of trichloroacetimidate (1 mmol):benzene (1 mL)]; the results are outlined in Table 2 (method C, entries [13][14][15][16][17][18]. 25 Compounds 7a-e have been previously prepared.…”

mentioning

confidence: 99%