... Volume: Page: ... Organic Letters. ... 13 CO 2 (95% enrichment), 9 , 10 a (b) addition of MeLi to give C 6 H 5 13 COMe, 10b (c) nitration to give 3-NO 2 C 6 H 4 13 COMe, (d) reduction with NaBH 4 to give 3-NO 2 C 6 H 4 13 CH(OH)Me, (e) synthesis of 4-MeC 6 H 4 S ...