김하영 강재효 이재형 노승배 Chemg Soug Oh 정봉영 2024-01-22T00:36:03Z 2024-01-22T00:36:03Z 2022-01-10 1990-01 https://pubs.kist.re.kr/handle/201004/147205 Cleavage reactions of penams with iodonium ylides leading to ring expansion. Article 3 Synlett, v.v. 3, pp.153 - 154 Synlett v. 3 153 154 penams iodonium ylides ring copper chlorides