abstract |
The present invention provides specific branched aromatic compounds. The branched-chain-containing aromatic compound of the present invention is easily soluble in isopropyl acetate, which has good liquid-separation operability, and can be used in the production method of peptides, etc., wherein it can be guided to the final product only through extraction and separation, and it does not need to be separated in each The steps are to carry out crystallization and separation of each intermediate. |