Study of <i>trans</i>-2-<i>tert</i>-Butylcyclopropylcarbene by Laser Flash Photolysis and Chemical Analysis<sup>1</sup>
作者:Haiyong Huang、Matthew S. Platz
DOI:10.1021/ja980252o
日期:1998.6.1
Laserflashphotolysis (LFP) of trans-2-tert-butylcyclopropyldiazirine (4) produces trans-2-tert-butylcyclopropylcarbene (5). Carbene 5 can be trapped with pyridine to form ylide 6. The rate of formation of ylide 6 was resolved and found to be linearly dependent on the concentration of pyridine. The lifetime of carbene 5 was determined to be 22 ns (pentane), 18 ns (acetonitrile and CF2ClCFCl2), 15
Intermolecular chemistry of a cyclopropylcarbene and its mechanistic implications
作者:Haiyong Huang、Matthew S. Platz
DOI:10.1016/0040-4039(96)01906-5
日期:1996.11
Trans-3-(2-tert-butylcyclopropyl)-3H-diazirine was decomposed both thermally (100 °C) and photochemically (350 nm, −25 to 25 °C) to give the anticipated ring-expanded 3-tert-butylcyclobutene product (50% photochemical, 64% thermal), along with azine and products of trapping by solvent. In the presence of tetramethylethylene (TME), a bicyclopropyl adduct was formed in yields as high as 37% (thermal)