Tdd526
发表于 2025-3-23 12:54:34
https://doi.org/10.1007/978-3-540-78373-2Cycloaddition; Diels–Alder reaction; heterocyclic chemistry; organic chemistry; stereochemistry
龙虾
发表于 2025-3-23 17:43:10
Heterocycles via Pyrylium and Pyridinium Betaines,um betaines offers an easy access to novel heterocyclicmolecules with a nitrogen or oxygen bridge. These cycloadducts can be synthetically manipulated easilytowards a number of interesting molecular structures with potential applications. It is to be notedthat only the progress in this area made in the last 10 years is emphasized.
寻找
发表于 2025-3-23 19:26:01
http://reply.papertrans.cn/89/8843/884297/884297_13.png
誓言
发表于 2025-3-23 22:54:05
Alfred HassnerHeterocyclic chemistry is the biggest branch of chemistry covering two-third of the chemical literature.The series covers hot topics of frontier research summarized by reputed scientists in the field.
胡言乱语
发表于 2025-3-24 03:48:06
http://reply.papertrans.cn/89/8843/884297/884297_15.png
Dysarthria
发表于 2025-3-24 07:38:49
http://reply.papertrans.cn/89/8843/884297/884297_16.png
Hamper
发表于 2025-3-24 13:09:36
K. V. Radhakrishnanction option, providing employment while also creating assets, and offering a welfare payment that is also a tangible economic investment. The efficacy of public works in situations of chronic poverty is, however. challenged in a growing body of literature from a range of critical commentators, as w
linguistics
发表于 2025-3-24 16:31:40
http://reply.papertrans.cn/89/8843/884297/884297_18.png
Kernel
发表于 2025-3-24 22:19:13
http://reply.papertrans.cn/89/8843/884297/884297_19.png
狂怒
发表于 2025-3-25 03:14:59
usually said to be defined in the Universal Declaration of Human Rights (UN 1948) and the International Covenant on Economic, Social and Cultural Rights (UN 1996a), among other sources of international law, and are frequently asserted as coming from natural law. The needs-based doctrine stresses th