Photo-on-Demand Synthesis of Chloroformates with a Chloroform Solution Containing an Alcohol and Its One-Pot Conversion to Carbonates and Carbamates
Chloroformates are key reagents for synthesizing carbonates and carbamates. The present study reports a novel photo-on-demand in situ synthesis of chloroformates with a CHCl3 solution containing a primary alkyl alcohol. It further allowed the one-pot synthesis of carbonates and carbamates through subsequent addition of alcohols or amines, respectively.
Mild and efficient capture and functionalisation of CO2 using silver(i) oxide and application to 13C-labelled dialkyl carbonates
A high yielding three-component reaction between β-iodo ethylamine derivatives, MeOH and gaseous CO2 at ambient temperatures and pressures is reported using silver(i) oxide. Unfunctionalised alkyl iodides were also found to be effective in this transformation and their optimisation is also described. To highlight the ease and control with which gaseous CO 2 can be captured and functionalised under mild conditions, the reaction was performed using 13C-enriched CO2 to afford specifically 13C-carbonyl-labelled dialkyl carbonates with exquisite control of the isotopic purity in good yields and without the need for specialised equipment.
Tunbridge, Gemma A.,Baruchello, Riccardo,Caggiano, Lorenzo
p. 4613 - 4621
(2013/05/08)
Applications of Phase Transfer Catalysis. 15. Phase Transfer Catalytic Preparation of Carbonic Esters Without the Use of Phosgene
Carbonic esters can be prepared in a phase-transfer catalytic reaction from primary alkyl halides and a mixture of dry potassium hydrogen carbonate and dry potassium carbonate in non-polar solvents.The conversion is ineffective in the absence of hydrogen carbonate and catalyst.
Lissel, Manfred,Dehmlow, Eckehard V.
p. 1210 - 1215
(2007/10/02)
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