The use of 1-tert-butoxy-2-tert-butoxycarbonyl-1,2-dihydroisoquinoline (BBDI) as a tert-butoxycarbonylation reagent for acidic proton-containing substrates such as phenols, aromatic and aliphatic amines hydrochlorides, and aromatic carboxylic acids in the absence of a base is described. The reactions proceed chemoselectively in high yield under mild conditions.

中文翻译：

---

一种新型的叔丁氧基羰基化试剂：1-叔丁氧基-2-叔丁氧基羰基1,2-二氢异喹啉（BBDI）

1-叔丁氧基-2-叔丁氧基羰基-1,2-二氢异喹啉（BBDI）作为叔丁氧基羰基化试剂用于酸性质子质底物（例如苯酚，芳族和脂肪族胺盐酸盐以及芳香族羧酸）的用途描述了不存在碱的情况。在温和条件下，该反应以高产率进行化学选择。