Design of Spiro[2.3]hex-1-ene, a Genetically Encodable Double-Strained Alkene for Superfast Photoclick Chemistry
作者:Zhipeng Yu、Qing Lin
DOI:10.1021/ja5012542
日期:2014.3.19
reporters offer a facile route to studying fast biological processes via the cycloaddition-based bioorthogonal reactions. Here, we report the design and synthesis of a strained spirocyclic alkene, spiro[2.3]hex-1-ene (Sph), for an accelerated photoclick chemistry, and its site-specific introduction into proteins via amber codon suppression using the wild-type pyrrolysyl-tRNA synthetase/tRNACUA pair.
Deamination of Methylenecyclopropylcarbinylamine. The Formation of a Vinyl Cation by Carbon-Carbon Bond Cleavage
作者:Akio Nishimura、Masaki Ohta、Hiroshi Kato
DOI:10.1246/bcsj.43.1530
日期:1970.5
3-methylenecyclobutanol. On the basis of these results and the deuterium distribution of the deamination products of methylenecyclopropylcarbinylamine-α,α-d2, the homoallylic (III) and cyclopropylvinyl (VIII) cations are proposed as intermediates.
Cyclopentenones from a Novel [4+1]Cocyclization of Methylenecyclopropanes with Fischer Carbenechromium Complexes
作者:Armin de Meijere、Takuya Kurahashi、Yao-Ting Wu、Kathrin Meindl、Stephan Rühl
DOI:10.1055/s-2005-863746
日期:——
Fischer carbenechromium complexes react with methylenecyclopropanes and bicyclopropylidene in an unprecedented manner. All four carbon atoms of the methylenecyclopropane moiety along with carbon monoxide are incorporated with the formation of three new C-C σ-bonds to give substituted cyclopentenone derivatives in moderate (33-58% for methylenecyclopropanes) to good yields (65-72% for bicyclopropylidene)
Fischer 碳烯铬配合物以前所未有的方式与亚甲基环丙烷和双环亚丙基反应。亚甲基环丙烷部分的所有四个碳原子与一氧化碳一起形成三个新的 CC σ-键,以中等(亚甲基环丙烷为 33-58%)和良好的产率(双环亚丙基为 65-72%)得到取代的环戊烯酮衍生物.
Facile Synthesis of Methylenecyclobutyl-Related Compounds via Rearrangement of Methylenecyclopropylcarbinols in the Presence of Multifluorosulfonyl Fluorides and Base
作者:Li-Xiong Shao、Min Shi、Ming-Hui Qi
DOI:10.1055/s-2007-990836
日期:2007.11
Methylenecyclopropylcarbinols treated with multifluorosulfonyl fluorides and triethylamine form the 3-methylenecyclobutyl fluorides and 3-methylenecyclobutyl (2-methylenecyclo-propyl)methyl ethers in good to high total yields. A proposed mechanism is based on the obtained results.
Silica Gel Triggered Transformations of 3-Methylenecyclopropylmethyl Sulfonates to 3-Methylenecyclobutyl Analogues: Experimental and Computational Studies
作者:Li-Xiong Shao、Yu-Xue Li、Min Shi
DOI:10.1002/chem.200600722
日期:2007.1.12
Methylenecyclopropylcarbinols treated with sulfonyl chloride and Et(3)N form the sulfonated products in almost quantitative yields, which can be transformed to the corresponding 3-methylenecyclobutylsulfonates with silicagel chromatography work-up. The rational explanation was proposed on the basis of computationalstudies.