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alpha chlorinated carbonates, their manufacturing process and their use for the protection of amingruppen in aminosaeuren.
alpha chlorinated carbonates, their manufacturing process and their use for the protection of amingruppen in aminosaeuren.
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机译:α氯化碳酸盐,它们的生产工艺以及它们在氨基saeuren中保护氨苯倍磷的用途。
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摘要
The invention relates to new alpha -chlorinated carbonates characterized in that their formula is: IMAGE in which X is a fluorine, chlorine or bromine atom and R1 is different from the IMAGE group and represents; a substituted or non-substituted, saturated or unsaturated, aliphatic, araliphatic, primary, secondary, tertiary or cycloaliphatic radical. These alpha -chlorinated carbonates are prepared by the action of a compound of formula R1OH on a chloroformate of formula: IMAGE in a solvent medium in the presence of an acid scavenger which is added after the two preceding compounds. They are used to block the amine function of amino acids. The alpha -chlorinated carbonate and amino acid are reacted in a solvent medium at a temperature of -5 DEG to 100 DEG C. in the presence of an acid scavenger. Blocked amines are very useful in peptide synthesis.
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