15398-00-2Relevant academic research and scientific papers
SmI2-mediated synthesis of 2,4-diarylpyrroles from phenacyl azides
Fan, Xuesen,Zhang, Yongmin
, p. 1863 - 1865 (2002)
A novel reduction of phenacyl azides induced by SmI2 was investigated and 2,4-diarylpyrroles were prepared in moderate to good yields under mild conditions.
Base-promoted ring-closing carbonyl-allene metathesis for the synthesis of 2,4-disubstituted pyrroles
Cheng, Guolin,Lv, Weiwei,Xue, Lulu
, p. 4414 - 4417 (2018/10/17)
A base-promoted ring-closing carbonyl-allene metathesis reaction of N-allenyl β-enaminones (generated in situ from N-propargyl β-enaminones) gives 2,4-disubstituted pyrroles with cleavage of the C(sp)-C(sp3) bond. This transition metal-free procedure generates 1 equiv. of acetic acid as the sole byproduct. A preliminary mechanistic study supports a stepwise [2 + 2] cycloaddition/retro [2 + 2] reaction pathway.
Ytterbium-mediated synthesis of 2,4-diarylpyrroles from α-bromo oxime ethers
Zhang, Xinxin,Zheng, Songlin,Zhang, Songlin
, p. 54254 - 54257 (2017/12/05)
A novel and efficient ytterbium promoted reductive cyclisation dimerization of α-bromo-oxime ethers affording 2,4-diarylpyrroles with high regioselectivity has been developed. Compared with the reported synthesis methods, the method has the following advantages: readily available and safe starting material, one-pot single step operation and mild and neutral reaction conditions.
Reaction between 4-Nitro-1,3-diarylbutan-1-ones and Ammonium Acetate in the Presence of Morpholine and Sulfur: An Efficient Synthesis of 2,4-Diarylpyrroles
Adib, Mehdi,Ayashi, Neda,Heidari, Fatemeh,Mirzaei, Peiman
, p. 1738 - 1742 (2016/07/06)
An efficient synthesis of 2,4-diarylpyrroles is described. Heating a mixture of a 4-nitro-1,3-diarylbutan-1-one and ammonium acetate in the presence of morpholine and sulfur afforded the corresponding 2,4-diarylpyrroles in excellent yields.
SmI2-mediated reduction of phenacyl azides: A novel preparation of 2,4-diarylpyrroles
Fan, Xuesen,Zhang, Xinying,Zhang, Yongmin
, p. 750 - 752 (2007/10/03)
A novel reductive cyclisation of phenacyl azides brought about by samarium iodide is described in this paper. By this process several 2,4-diarylpyrroles have been prepared.
NOVEL TYPES OF TRANSFORMATIONS OF α-AZIDOSTYRENE DERIVATIVES AND 3-ARYL-2H-AZIRINES IN THE PRESENCE OF HEXACARBONYLMOLYBDENUM
Nitta, Makoto,Kobayashi, Tomoshige
, p. 1715 - 1718 (2007/10/02)
The reaction of α-azidostyrene derivatives with hexacarbonylmolybdenum was found to give 2,5-diarylpyrroles and acetophenone derivatives via a complexed 1-arylvinylnitrene intermediate, while that of 3-aryl-2H-azirines gave 2,4-diarylpyrroles in addition to acetophenone derivatives and 2,5-diarylpyrazines.
