【正文】
5 54 2020/9/15 55 2020/9/15 56 A synthesis of Nethyl2aminomethylspiro[]heptane from starting pounds having no more than three contiguous carbon atoms is required. 2020/9/15 57 A synthesis of 2acetyl2methylbicyclo[]octane from cyclohexene and other starting pounds having no more than four contiguous carbon atoms is required. 2020/9/15 58 2020/9/15 59 2020/9/15 60 A synthesis of 2,7dimethyl4octanone from starting pounds having no more than four contiguous carbon atoms is required. 2020/9/15 61 A synthesis of 1,4,6trimethylnaphthalene from paraxylene and other starting pounds having no more than four contiguous carbon atoms is required. 2020/9/15 62 2020/9/15 63 Biomimetic Synthesis 仿生合成 21世紀 2020/9/15 64 托品酮 ( Tropinone)的仿生合成 2020/9/15 65 2020/9/15 66 2020/9/15 67 2020/9/15 68 2020/9/15 69 2020/9/15 70 2020/9/15 71 2020/9/15 72 2020/9/15 73 2020/9/15 74 。O OR R 39。OC O 2 E t ORE t O 2 COR 39。OC l a i s e n 縮 合2020/9/15 34 OC O 2 E tC O 2 E tC O 2 E t1 . N a O E t2 . H 3 O +1 . K M n O 42 . E t O H , H +2020/9/15 35 ( 5) 1,4bicarbonyl ROR 39。O OC+ROR 39。+C O2E tOR 39。2020/9/15 21 OP hOP hC O 2 E tOP hC O 2 E tC l+O E tO OB r+2020/9/15 22 Application of Epoxy (環(huán)氧) pounds R 1R 2O HR 1 R2O H+OR 1R 2 M g B r2020/9/15 23 H OO+C H 2 M g X2020/9/15 24 H OO+C M g XC4H9 nn C4H9H O1 . E t2O2 . H3O+H2P d / C2020/9/15 25 Disconnection on Cyclohexene +D i e l s A l d e r R e a c t o n202