Sanakirja
Tekoälykääntäjä
Ääntäminen
US
- Observed on sanan observe partisiipin perfekti.
- Observed on sanan observe imperfekti.
- Observed on sanan observe taipunut muoto.
Esimerkit
- N-substituted pyrroles are much less reactive than the other 5-membered 1,3-dienes; no reaction was observed between N-(trimethylsilyl) pyrrole or N-benzylpyrrole with Smith’s diene (4) under thermal or high pressure (4 days at 14 kbar) conditions, even in the presence of Lewis acids.