Question

Решите цепочки плиз
1) CH4->c2h2->h3c-C=O-H->C2H5OH->C2H4->H3C-C=O-H
2) C6H6->C6H5CH3->C6H5CH2CL->C6H5CH2OH->C6H5C=O-H->C6H5-C=O-H
3)H3C-CH=ChH2+Cl2->?+2NaOH->?+h2o->?+H2->?+H2SO4->?
4) бутаналь+h2->?+H2SO4->?+HCl->?+NaOH->?+[O]->?