Chloromethane Anhydrous

Triphenylmethylsodium. A 1% sodium amalgam is added to a solution of triphenyl-chloromethane in 1.5 1. of anhydrous ether in a 2-1. bottle with a ground-glass... 

Alternatively, 1-phenylsulfanylcydopropyllithium (58), prepared by metalation of cyclopropyl phenyl sulfide (57) with butyllithium, has also been used successfully for the synthesis of cy-clobutanones. Addition to ketones, both saturated and unsaturated, leads to the desired 1,2-adducts 59 in high yield. Subsequent treatment of these cyclopropyl alcohols with either aqueous tetrafluoroboric acid at room temperature or anhydrous tin(IV) chloride in di-chloromethane afforded the corresponding cyclobutanones 60 in 65-88% yield. ... 

CHLOROMETHANE (74-87-3) CH3CI Highly flammable gas [explosion limits in air (vol %) 8.1 to 17.2 flashpoint <32°F/<0°C autoignition temp 1170°F/632°C Fire Rating 4]. Moisture causes decomposition. Violent reaction with strong oxidizers, acetylene, anhydrous aluminum trichloride, ammonia, amines, ethylene, fluorine, interhalogens magnesium, potassium, powdered aluminum or zinc, sodium, and... 

Typical procedure. (2S,3S)-4-Benzyloxy-l,2,3-butanetriol 1,2-cyclic carbonate 1152 (Method A) [812] To a stirred solution of triphosgene (104 mg, 0.35 mmol) in di-chloromethane (1 mL) at —70 °C were added pyridine (0.29 mL, 3.59 mmol) and a solution of triol 1151 (125 mg, 0.59 mmol) in dichloromethane (1 mL). Once the addition was complete, the reaction mixture was allowed to warm to room temperature. The resultant homogeneous solution was quenched with saturated aq. ammonium chloride solution, washed with 1 n aq. HCl, saturated aq. NaHCOs, and brine, and dried over anhydrous MgS04. The organic layer was filtered and concentrated in vacuo. The crude product was purified by column chromatography on silica gel using EtOAc/hexanes (1 1) as eluent to afford (2S,3S)-4-benzyloxy-1,2,3-butanetriol 1,2-cyclic carbonate 1152 (108 mg,... 

Why Chloromethane 205 The Surface Acidity of T -Alumina 206 Three Types of Surface Site Become Four 208 Interaction of Methanol with the TJ-Alumina Surface 211 The Interaction of Anhydrous HCI with T -Alumina 211 Temperature-Programmed Reaction Studies 213 Summary and Future Outlook 213... 

---