Paul and Anthony, I have a similar, yet different issue here, if I may.

I'd like to match the space (\s) + whatever the text until the first occurence of "içinde", and then move this string just after the "olarak,"

I tried to visualise it as below:

This is the actual text:

Bileşik 001a şema 11'in adım 65'inde bildirilen usule uygun olarak, metil 5-(2-((7-(2-(((tert-butoksi)amino)trimetil)piridin-4-il)-2-izobutilbenzofuran-5-il)metoksi)fenil)asetat'tan (21b) (200 mg, 0,349 mmol) DCM (20 mL) içinde, TFA (5,269 mL, 8,49 mmol) kullanılarak hazırlanmıştır.

(Content changed not to violate any right if any.)

I'd very much appreciate if you could offer a solution.

Arif DURSUN

So the replacement string should be like this?

Bileşik 001a şema 11'in adım 65'inde bildirilen usule uygun olarak, DCM (20 mL) içindemetil 5-(2-((7-(2-(((tert-butoksi)amino)trimetil)piridin-4-il)-2-izobutilbenzofuran-5-il)metoksi)fenil)asetat'tan (21b) (200 mg, 0,349 mmol) , TFA (5,269 mL, 8,49 mmol) kullanılarak hazırlanmıştır.

I'm sure not, but it would help if you could correct it so we see what it should look like.  Looks simple enough once we know what to do.

Arif DURSUN

So the replacement string should be like this?

Bileşik 001a şema 11'in adım 65'inde bildirilen usule uygun olarak, DCM (20 mL) içindemetil 5-(2-((7-(2-(((tert-butoksi)amino)trimetil)piridin-4-il)-2-izobutilbenzofuran-5-il)metoksi)fenil)asetat'tan (21b) (200 mg, 0,349 mmol) , TFA (5,269 mL, 8,49 mmol) kullanılarak hazırlanmıştır.

I'm sure not, but it would help if you could correct it so we see what it should look like.  Looks simple enough once we know what to do.

Yes, exactly, except only a space after the word "içinde", so exact intented target would be as below:

Bileşik 001a şema 11'in adım 65'inde bildirilen usule uygun olarak, DCM (20 mL) içinde metil 5-(2-((7-(2-(((tert-butoksi)amino)trimetil)piridin-4-il)-2-izobutilbenzofuran-5-il)metoksi)fenil)asetat'tan (21b) (200 mg, 0,349 mmol) , TFA (5,269 mL, 8,49 mmol) kullanılarak hazırlanmıştır.

In fact Arif DURSUN it's not quite so simple.  How do we know how far to go back and match before the word "içinde"?  You have shown this:

spaceDCMspace(20spaceml)space

What rule should we be using to define how many chars/numbers/spaces we have to go back in every case?  Is it always this?

spaceDCMspace(20spaceml)space

These are various examples, we should find the first occurence of içinde and go backwards until the third space (3rd space included) 

 DCM (10 mL) içinde
 etanol (30 mL) içinde
 THF (20 mL) içinde
 MeOH/THF (6 mL) içinde

correction until the 4th space

Arif DURSUN

ok - try this:

Search

(.+olarak,)(.+?)(?<!\biçinde\b.+)((\s[\d\w()/]+){3}\siçinde)(.+$)

Replace

$1$3$2$5

Make sure you back up first!!

Thank you, I'll do my test and inform you about the result. 

Tested, worked just like it should. But lost the tag data. So in the current position, it would be more burdensome to re-tag them. Unless there is a way to keep tags, I would continue manually. In any case, your formula is great. I also try to learn from it.

Arif DURSUN

Yes, tags are a problem.  It's also why the regex from Anthony above may also fail and why I elected to use the lookaround.  It's a bit trickier with this request from you though.

If Trodos Studio Development Team would find a "find&replace with the tags intact", it would be a revolution. For example my current work would finish in 2 days. Now I'll probably strive for 5 days for the sake of tags. Could you explain why tags can not be found and replaced? What's the tech nuisance behind it?

Do you think is there any way to do this task by AHK?