Convincing the dope to get into bed (6)
I believe the answer is:
cogent
'convincing' is the definition.
('cogent' can be similar in meaning to 'convincing')
'the dope to get into bed' is the wordplay.
'the dope' becomes 'gen' (I've seen this in other clues).
'to get into' is an insertion indicator.
'bed' becomes 'cot' (cot is a kind of bed).
'gen' going inside 'cot' is 'COGENT'.
(Other definitions for cogent that I've seen before include "Clear, logical and convincing" , "Convincing, persuasive" , "Well argued, compelling" , "'Clear and logical, argument say (6)'" , "Compelling or convincing" .)