be functionalized at the 1-position via lithiation and subsequent electrophilic trapping. The resulting products 3 can be deprotected and oxidized to afford the corresponding 1,3-disubstituted isoquinolines 5. Deprotection of dihydroisoquinoline 3k followed by sodium borohydride reduction affords the cis-1,3-disubstituted tetrahydroisoquinoline 11. The 1,3-disubstituted N-Boc-1,2-dihydroisoquinoline
3-取代的N -Boc-1,2-二氢
异喹啉2可以通过
锂化和随后的亲电捕集在1位官能化。可以将所得的产物3脱保护并氧化,得到相应的1,3-二取代的
异喹啉5。二氢
异喹啉3k脱保护,然后
硼氢化钠还原,得到顺式-1,3-二取代
四氢异喹啉11。1,3-二取代的N -Boc-1,2-二氢
异喹啉3g在1位有效地烷基化,得到1,1,3-三取代的类似物12。