The coupling of aryl halides with copper at very high temperature is called the Ullmann reaction, which is of broad scope and has been used to prepare many symmetrical biaryls. However, when a mixture of two different aryl halides is used, there are three possible biaryl products.
If the chain symmetry is maintained in the crystal lattice, the possible occurrence of different space groups is considerably restricted.
Tactics are so important because everybody has to know what they have to do on the pitch. The relationships and behaviours off the pitch between team-mates have to be as good as possible.
I made several short films with very little dialogue. I'm still not a fan of talking heads. My stories are told with images as much as possible.
The Republican Party would be really smart to absorb as much of the Tea Party movement as possible.
I stay away from the telephone if at all possible.
The vast majority of terrestrial species are in fact microbes, and scientists have only begun scratching the surface of the microbial realm. It is entirely possible that examples of life as we don't know it have so far been overlooked.
SF is the literature of the theoretically possible, and F is the literature of the impossible.
Well, it's not full time - my dancers are only paid for six months of the year in two three-month blocks; but yes, it is possible we could do it in another year.
I was in that part of the class that made the top half possible.
It is in the nature of the New Yorker to be as topical as possible, on a level that is often small in scale and playful in intention.
You have to be as original as possible. It's a tough thing to come up with something totally original.
It is possible for one never to transgress a single law and still be a bastard.
I wanna be as transparent as possible. I'm not a serious guy.
Of all possible debauches, traveling is the greatest that I know; that's the one they invented when they got tired of all the others.
My wish is to bring the troops home as quickly as possible.
It is inconceivable that releasing an illegal immigrant that could cause a tuberculosis pandemic here in the U.S. would ever be considered as a possible option.
Whenever possible, buy a fish whole. With tuna, this isn't practical; with smaller fish, it is.
After mature consideration it was unanimously agreed, that, to prevent as much as possible their attempting to return and molest the settlers that may be set down on their lands, a sufficient number of vessels should be hired with all possible expedition for that purpose.
Happiness serves hardly any other purpose than to make unhappiness possible.
