When Jesus was dragged before the high priest and the “elders’ it is quite unlikely that there was any kind of formal trial at this time. To begin with there was no substantive religious charge that could be brought against him. It was not blasphemy to claim to be the "messiah" or a "son of God". If there was a blasphemy, a trial before the Sanhedrin would have brought that out and a sentence of death by stoning could have been brought down. The Sanhedrin did not lose the right to impose the death penalty until the year AD 39. The execution would have to be ratified by the Roman governor. This was just a rubber stamp procedure, after all what did the Romans care about Jews stoning one of their own to death for some obscure religious crime?
We also must take into account the nature of the Sanhedrin itself. It was a very dignified body of seventy elders somewhat in the nature of a supreme court. The high priest chaired but did not control the Sanhedrin, the majority of whose members were Pharisees. The Pharisees opposed the high priest at just about every turn. The high priest was in fact perhaps the most hated man in Judea. Under Roman administration, the high priest was personally appointed by the Roman governor. Caiaphas was the personal choice of Roman procurator Valerius Gratus. The Pharisees regarded Caiaphas as a collaborator and a traitor. The Sanhedrin was not likely to respond to a sudden midnight summons from the high priest. As a matter of fact, it was explicitly forbidden for the Sanhedrin to meet at night or on a religious holiday. They were also not to meet in any place but the Chamber of Hewn Stone on Temple Mount.
You might recall from the Acts of the Apostles that Peter and some of the disciples were actually charged with blasphemy and brought to trial before the Sanhedrin. They were dismissed after being defended by Rabbi Gamaliel who was himself a member of the Sanhedrin and a prominent Pharisee. If Jesus appeared before the high priest at all it was simply to be remanded over to Pontius Pilate. The Romans wanted him for a lot more than disturbing the peace in the temple. They wanted him for sedition and treason.
I am also convinced that the trial before Pilate was a foregone conclusion... a trial in name only. The Bible, however, portrays Pontius Pilate as a reasonable person, a gentleman who thought Jesus was innocent, albeit a little deluded. We also get the impression that Pilate is somewhat of a wimp in that he allows himself to be manipulated by the high priest and elders into executing Jesus.
In truth this portrayal of Pilate is far from factual. He was an ambitious, greedy and brutal man. He once ordered his troops into the temple to loot the treasury. It must be noted that he was not the first nor the last Roman governor to do this. This serves to indicate just how much he was swayed by the opinions or threats of the elders or the high priest who was after all his personal appointee. He was also responsible for the suppression of a number of rebellions at great loss of life. His main objective during his tenure of office seems to have been to be to see just how much he could get away with in offending Jewish religious sensibilities. He was eventually dismissed from office by the emperor for "causing an unnecessary massacre". I suppose that this by way of contrast to all the necessary massacres he was responsible for. Are these the marks of a wimp? of a reasonable man? Certainly not! The trial of Jesus, if there was one, was in name only. Jesus had challenged Roman political authority...Jesus must die.