| 摘要 |
<p>Title cpds are of general formula (I): in which R is Me or Et; R1 is Et, Pr vinyl, or allyl (I) may be prepd by treatment of the appropriate phenol with MeNCO (1 mol) in the presence of a small amt of base nNEt3 etc) and a solvent (CH2Cl2 etc). (I) are active against American cockroaches, milkweed bugs and dock beetles etc.</p> |
