DBU-mediated transformation of arylmethylenecyclopropenes to alkylidenecyclopropanes
摘要:
An interesting DBU-mediated intramolecular isomerization of arylmethylenecyclopropenes 1 to alkylidenecyclopropanes (ACPs) has been described in this context. A variety of ACPs were obtained through a base-assisted manner in moderate to good yields under mild conditions with good stereoselectivities in most cases. (C) 2013 Elsevier Ltd. All rights reserved.
DBU-mediated transformation of arylmethylenecyclopropenes to alkylidenecyclopropanes
摘要:
An interesting DBU-mediated intramolecular isomerization of arylmethylenecyclopropenes 1 to alkylidenecyclopropanes (ACPs) has been described in this context. A variety of ACPs were obtained through a base-assisted manner in moderate to good yields under mild conditions with good stereoselectivities in most cases. (C) 2013 Elsevier Ltd. All rights reserved.
An easy access to 5-fluoropyridazines by a [2 + 1]/[3 + 2]-cycloaddition sequence between terminal alkynes, a difluorocarbene, and a diazo compound is reported. This approach does not necessitate the isolation of any intermediates, and a wide range of novel 5-fluoropyridazines was synthesized from readily available starting materials. Additionally, these compounds were used as a platform to access
<i>Gem</i>-Difluorocyclopropenes as Versatile β-Monofluorinated Three-sp<sup>2</sup> Carbon Sources for Cp*Rh(III)-Catalyzed [4 + 3] Annulation: Experimental Development and Mechanistic Insight
作者:Huiying Xu、Weijie Chen、Mengyao Bian、Hongtao Xu、Hui Gao、Ting Wang、Zhi Zhou、Wei Yi
DOI:10.1021/acscatal.1c04508
日期:2021.12.3
oxidative addition/reductive elimination/C–F bond cleavage-enabled ring-scission involving the unprecedented olefinic C(sp2)–C(sp2) bondcleavage, has been deduced based on experimental and computational mechanistic studies. Taken together, our findings not only identified gem-difluorocyclopropenes as potent and efficient coupling partners for C–H activation development but also provided a sound basis
DBU-mediated transformation of arylmethylenecyclopropenes to alkylidenecyclopropanes
作者:Rui Sang、Hai-Bin Yang、Min Shi
DOI:10.1016/j.tetlet.2013.04.076
日期:2013.7
An interesting DBU-mediated intramolecular isomerization of arylmethylenecyclopropenes 1 to alkylidenecyclopropanes (ACPs) has been described in this context. A variety of ACPs were obtained through a base-assisted manner in moderate to good yields under mild conditions with good stereoselectivities in most cases. (C) 2013 Elsevier Ltd. All rights reserved.