C with simultaneous

The corresponding semibatch process is a rather slow reaction at 90 °C with simultaneous exothermic decomposition of DAST. Thus, the processed volume is restricted to laboratory scale (< 11) [ 50]. The transfer to production in a stirred tank is prohibited because of these safety reasons. A micromixer-tube reactor approach was chosen using the convective-flow-driven bas-relief caterpillar micromixer and tubes with diameters of 1-5 mm and lengths up to 20 m, respectively, and tube reactor volumes up to 500 ml (see Figure 5.16). 

Heating of bis(trimethylsilyl)carbodiimide with triphenylsilyl chloride at 245-250 °C with simultaneous distillation of trimethylsilyl chloride gives bis(triphenylsilyl)carbodiimide 21 in 75 % yield. ... 

Most of the three-membered rings discussed in this chapter are rather stable, their decomposition temperature usually being at 150-200 °C with simultaneous melting. This can partly be attributed to the presence of the bulky protecting groups, but it seems that the presence of more than one heavy element in the three-membered ring is also a stabilizing factor. 

The reaction of 2,2-dialkoxyethylphosphonates with the corresponding diols produces moderate to good yields of phosphonylated l,3-dioxolanes,- 1,3-dioxans,- and polymethylene acetals.- " The acetal transfer is carried out by heating an equimolar mixture of the reactants at 140-150°C with simultaneous distillation of the liberated alcohol.Heating a mixture of diethyl 2,2-diethoxyethylphosphonate and crotyl alcohol at 130°C gives the phosphonylated allyl vinyl ether, whose rearrangement to l-formyl-2-methyl-3-butenylphosphonate is accompanied by extensive decomposition. ... 

S12 on heating at a rate of 5 K min Sn decomposes within the temperature range of 140-155 °C with simultaneous formation of Soo. Ss, and some... 

Flush the generated hydrides Into the heated quartz cuvette (1000 °C) with simultaneously generated hydrogen Purge (whole system) with inert gas (approx. 1500 mL/min) 30... 

N w we have fotond that polyol esters, containing a minimal percentage of ernhydro-compounds cem be obtained if the fatty acid is esterified with the polyol or a glycoside thereof, in the presence of a fatty acid soap (in a quantity of 10% or more calculated upon the polyol) at a temperature between 100 C and 190 C with simultaneous elimination of the water formed during the reaction. If, for instance, sorbitol is esterified at 150°C in the presence of fatty acid soap, only 3 to 5% of the sorbitol is converted to anhydro-compounds (sorbitan). (See Figure 1.)... 

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